Instruction: Analyze the user's review text and determine the overall sentiment expressed, then choose the corresponding sentiment option from the provided list (A: very positive, B: positive, C: neutral, D: negative, E: very negative) based on the identified sentiment.

Input:
I was expecting a decent bass but the R80 is quite lean in bass. Mids and treble are balanced to my ears but the lack of bass makes the R80 not suitable for listening to my music. Build quality is better than I thought though.

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