Instruction: Assess the user's sentiment in the provided review and select the appropriate sentiment option from the list as the answer.

Input:
This is probably my fault for not paying closer attention but these bags were way smaller than what I thought.  I was hoping to use them for sleeping bags but these are not even close to being big enough.  Very bummed.

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