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 is just a big sheet of pre-filter material that you cut to fit your type of air cleaner.  Sheet has score lines for the width of one air filter element and you cut along the lines for however many your air cleaner stacks up.  Carbon dust falls out as you cut so do this someplace you can clean up easily.  Amazon has the best price on this filter.

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