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

Input:
These are inexpensive and work well with airline audio systems, computers, walkmans.  Battery life is excellent, at least 20 hours on a set of batteries.  However, mechanically, these headphones are flimsy.  The earcups twist for storage, but if stressed, they will break off.  They can be repaired, if you don't mind using epoxy glue and wrapping up the break with wire, and not having the twist capability anymore.

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