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:
These are not worth the money.  The probes are cheap and fail after a month or two.  I have had 2 of them fail the same way.  Don't waste your money!!

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