In valuing underlying hedge fund positions, the most conservative approach is most likely one that uses:
A. the average of the bid and ask prices.
B. bid prices for longs and ask prices for shorts.
C. the most recent market prices.
请问这个题目，选择B怎么理解？
我的理解是：conservative approach就是用更保守的方式计算，bid是买价格价格低，ask是卖价价格高。所以保守计算就是低价卖出，高价买进，那不就理解成bid price short，ask price long？
为什么是选择B？
