C可以解释一下吗

NO.PZ2018113001000066 问题如下 Whiof the following statements about speculativevolatility trars anheers of volatility is most incorrect? A.If speculative volatility trars believethmarket contions will remains stable, they often want to net-short volatility. B.Most heers are net-long volatilityposition, because they want to buy protection from unanticipatepricevolatility. C.There is no fferences between speculativevolatility trars anheers of volatility. because they're alltrang on volatility. C is correct中文解析投机性波动交易者通常希望净做空波动，如果他们相信市场状况将保持稳定。这样做的原因是，大多数期权在到期时仍然是OTM状态，期权卖方可以将期权费作为接受波动性风险的报酬。大多数对冲者都是净多头波动，因为他们想从意料之外的价格波动中购买保护。购买保护通常意味着做多期权头寸。这可以被认为是为防止汇率波动而支付的保险费。 AIf speculative volatility trars n't believe thmarket contions will remains stable, they often want to net-short volatility.BMost heers are net-long volatility position, because they want to buy protection from anticipateprivolatility.

NO.PZ2018113001000066 Most heers are net-long volatilityposition, because they want to buy protection from unanticipatepricevolatility. There is no fferences between speculativevolatility trars anheers of volatility. because they're alltrang on volatility. C is corre中文解析 投机性波动交易者通常希望净做空波动，如果他们相信市场状况将保持稳定。这样做的原因是，大多数期权在到期时仍然是OTM状态，期权卖方可以将期权费作为接受波动性风险的报酬。 大多数对冲者都是净多头波动，因为他们想从意料之外的价格波动中购买保护。购买保护通常意味着做多期权头寸。这可以被认为是为防止汇率波动而支付的保险费。 老师 这个跟我理解的不太一样，投机者不是一般都需要市场的波动低买高卖赚价差来获得投机的收益么？所以我之前理解的是投机者应该是希望市场有波动的，而不是稳定的。稳定的市场投机者如何投机呢？同样的，对冲者更多的是的想要对冲风险，应该是希望市场稳定吧，这样更适合Hee

NO.PZ2018113001000066 Most heers are net-long volatilityposition, because they want to buy protection from unanticipatepricevolatility. There is no fferences between speculativevolatility trars anheers of volatility. because they're alltrang on volatility. C is corre中文解析 投机性波动交易者通常希望净做空波动，如果他们相信市场状况将保持稳定。这样做的原因是，大多数期权在到期时仍然是OTM状态，期权卖方可以将期权费作为接受波动性风险的报酬。 大多数对冲者都是净多头波动，因为他们想从意料之外的价格波动中购买保护。购买保护通常意味着做多期权头寸。这可以被认为是为防止汇率波动而支付的保险费。 老师，能否一下为什么speculator是net short option，而heer是net long？speculator看涨的话，也可以long call 获利；heer如果有头寸的话，也可以short call对冲

NO.PZ2018113001000066 问题如下 Whiof the following statements about speculativevolatility trars anheers of volatility is most incorrect? A.If speculative volatility trars believethmarket contions will remains stable, they often want to net-short volatility. B.Most heers are net-long volatilityposition, because they want to buy protection from unanticipatepricevolatility. C.There is no fferences between speculativevolatility trars anheers of volatility. because they're alltrang on volatility. C is correct中文解析投机性波动交易者通常希望净做空波动，如果他们相信市场状况将保持稳定。这样做的原因是，大多数期权在到期时仍然是OTM状态，期权卖方可以将期权费作为接受波动性风险的报酬。大多数对冲者都是净多头波动，因为他们想从意料之外的价格波动中购买保护。购买保护通常意味着做多期权头寸。这可以被认为是为防止汇率波动而支付的保险费。 老师好这是哪个知识点，在讲义里哪里？谢谢。