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:
This is a very useful knife sharpener for the quick sharpness.  Bought this for my mother in law who is 60 years of age and she uses it often.  Would recommend anyone to buy AccuSharp 001 knife sharpener.

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