问题如下图:
选项:
A.
B.
C.
D.
解释:
从hedge ratio那里就开始不明白了(where does 0.4 come from?), 后面的large loss也没太看懂 (if trader B replicates a down-and-out call with barrier 96, his call will be worth 0 if price is below barrier. How does he suffer a huge loss?)