求助！！！GWD-8-Q11

GWD-8-Q11:

There are no legal limits, as there are for cod and haddock, on the size of monkfish that can be caught, a circumstance that contributes to their depletion through overfishing.

A.    There are no legal limits, as there are for cod and haddock, on the size of monkfish that can be caught, a circumstance that contributes to their depletion through overfishing.

B.    There are no legal limits on the size of monkfish that can be caught, unlike cod or haddock, a circumstance that contributes to depleting them because they are being overfished.

C.    There are legal limits on the size of cod and haddock that can be caught, but not for monkfish, which contributes to its depletion through overfishing.

D.    Unlike cod and haddock, there are no legal size limits on catching monkfish, which contributes to its depletion by being overfished.

E.     Unlike catching cod and haddock, there are no legal size limits on catching monkfish, contributing to their depletion because they are overfished.

这道题我怎么觉得一个答案都不对呢参考答案是C可是C的which不是无指代吗？