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:
Put this on my son's 16 inch bike.  It serves its purpose and adjusted well for his bike.  I only give it an okay rating because the kickstand is stiff and my son has issues getting it to come down.  Also the black cap on the end keeps falling off.  Needs to be glued on.

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