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:
I've had this product for over 6 months and use them 2 to 3 times per week. They've held up well with no significant wear.

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