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

Input:
One reviewer is definitely right ... don't listen to quiet music if you use these speakers. Also, the sound quality is kind of mediocre.  The biggest problem is that they pick up every signal from every cell phone in my entire apartment complex and amplify it.  Beyond that, one of the speakers, after 8 months of use, no longer works very well ... it's very quiet and muffled/raspy.  Buyer beware.

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