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 sharpener is awesome. It works great for normal knives and is cheap. Be very careful when sharpening your serrated knives, I fear it may have ruined my serrated knife.

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