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 was looking for a yoga mat with a non-slip surface.  This was advertised as one but I still don't get a strong grip.  But overall, it was a good purchase given the price.

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