求问一道题~ position, current, assets, better, option

jawz

to what sort of option on the counterparty's assets can the current exposure of a credit-risky position better be compared?
a. A short call
b. A short put
c. A short knock-in call
d. A binary call















答案是B，最后可以解释一下这个题目啥意思~什么叫compared。。。