Instruction: Given the user's review, identify the user's sentiment from the listed options. Answer using one of the options.

Input:
Received these.  Looked through them.  Saw dark spots, scratches and defects in the lenses. Within 5 minutes I went from excited to bummed and returned them. Pain in butt to return things.

Bummed they weren't quality checked better before I received the item b

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