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 really appreciate the size of this ball. Messes with your head when you store it with the regular basketball. We've bounced this thing against concrete for about a month now with no real signs of wear.

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