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 knife sharpener sharpens knifes so quickly and sharply that you'll want to re-sharpen all the knifes you have!  I love it!

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