Instruction: Carefully assess the user's review for any strong expressions of sentiment, either positive or negative. Based on your analysis, select the most fitting sentiment option from the provided list as output.

Input:
I have used this sharpener on kitchen knives for about 2 years. I bought this second one for use sharpening my butcher knives. They require sharpening much more often. Two swipes and I'm good to go.

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