问题如下：
Which of the following factors does not affect the spot price of an asset that has no interim costs or benefits?
选项：
A.The time value of money
B.The risk aversion of investors
C.The price recently paid by other investors
解释：
C is correct. The price recently paid by other investors is past information and does not affect the spot price. The time value of money and the risk aversion of investors determine the discount rate. Only current information is relevant as investors look ahead, not back.
衍生品的价格是通过无套利的方式定出来的，所以不受投资者风险偏好影响。请问这句话什么意思，帮忙解释一下，谢谢！
