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:
Good: Adjustable temples, polarized

Con: No Z87 marking on lens. I even took out the lens to double check.

Wouldn't trust my eyes for work but maybe on non hazardous environment.

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