The correct answer to this question is:
A. it was seen as way to undermined the neutrality acts
The Lend Lease program basically killed the Neutrality Acts when it was lastly put into action and pressed the US a step closer to being a full participant in the war. It wasn't a drain on the US Treasury and isolationists weren't offended over it because of support for the Axis powers - it wasn't why the Lend Lease program was drafted up in the first place. It also wasn't a direct violation of US law because it still had to be approved by Congress, however isolationists consider it as a violation of their belief that the US shouldn't get caught up with foreign conflicts.