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:
Allowed me to listen to my iPod in my '96 Taurus, which was nice sometimes, but had some trouble with it constantly auto-switching to side B. There were days where I couldn't listen to my music during my entire commute. I removed the tape (which isn't necessary for it to function) and I encountered the problem a lot less (though still occasionally).

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