NO.PZ2018091706000004
问题如下：
Matthew is a currency analyst, a client asks him to find the most favorable bid/offer spread between USD and GBP, this client is multinational corporations, and Matthew give him advice, trading currency at 8:00 AM New York time. Considering above situation, which of the following factors most likely to lead to a narrow bid/offer spread for the client:
选项：
A.Market volatility.
B.Timing.
C.The size of the transaction.
解释：
B is correct.
考点：factors that affect the bid/offer spread 其中的一个因素。
解析: 就是时间因素在New York time 8:00-11:00 AM 和 London time: 13:00-16:00 这2个时间段交易，bid/offer spread是最小的，因为交易比较活跃。
总感觉题目出的不是很严谨啊，交易时间比非交易时间spread小，但其实非交易时间根本没有spread怎么比较？
