Of all the wild animals in their area, none was more useful to the Delaware tribes than the Virginia white-tailed deer: it was a source of meat, and its hide was used for clothing, its antlers and bones for tools, and its sinews and gut for bindings and glue.

(A) deer: it was a source of meat, and its hide was used for clothing, its antlers and bones for tools, and its sinews and gut
(B) deer: it was a source of meat, and its hide used for clothing, with its antlers and bones for tools, and its sinews and gut used
(C) deer, which was a source of meat, with its hide used for clothing, antlers and bones for tools, as well as its sinews and gut used
(D) deer, which, as well as being a source of meat, its hide was used for clothing, its antlers and bones for tools, and its sinews and gut were
(E) deer, with, as well as being a source of meat, its hide used for clothing, its antlers and bones for tools, and its sinews and gut

OA: A

Here's my issue with A, subject verb agreement:

it's hide was used for clothing, its antlers and bones for tools, and its sinews and gut.

Now, what this is basically saying is that it's antlers and bones was used for tools.

But that's not, right, it should be were used. So, I thought B, since that answer choice doesn't have that problem.


But, this is an official GMAT paper test question, so I know that I'm wrong, and it is right. Can someone please explain why?