TTGWD21-5： 好心人提供个 答案

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.

1. 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.
2. 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.
3. 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.
4. Unlike cod and haddock, there are no legal size limits on catching monkfish, which contributes to its depletion by being overfished.
5. Unlike catching cod and haddock, there are no legal size limits on catching monkfish, contributing to their depletion because they are overfished.

我下的答案是B，但也有说是E的。 我选的是A，觉得这一项表达最清楚。B中的which指代有问题，E中的平行结构和because从句的位置都有问题呀

请高人指点

i pick D

E 的平行结构对吗？难道unlike 引导的比较对象不用对应主句的主语吗

就考了，急呀！