236. The Coast Guard is conducting tests to see whether pigeons can be trained to help find
survivors of wrecks
(A) to see whether pigeons can be trained to help find
(B) to see whether pigeons can be trained as help to find
(C) to see if pigeons can be trained for helping to find
(D) that see if pigeons are able to be trained in helping to find
(E) that see whether pigeons are able to be trained for help in finding
For now, what I know is that "whether" is used for two options, But I dont see any other option in the sentence above, so why the answer is A ?