Instruction: Assess the user's sentiment in the provided review and select the appropriate sentiment option from the list as the answer.

Input:
Simple and economical way to sharpen your knives. I have used this regularly for over a year and I have very sharp knives.  You don't have to spend a fortune for a good knife sharpener - this is it.  I would recommend not using this on scissors, however. There's something about the angle of the scissor blades that makes this a bad idea.

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