Instruction: Determine the sentiment expressed by the user in her review from the provided choices, and respond by selecting one of the available options.

Input:
This product ended up being a waste of money for me. They didn't fit too well so I ended up just using the original Jawbone ear piece with the these.

Options:
A: very positive
B: positive
C: neutral
D: negative
E: very negative
Answer: E: very negative