Task: Sentiment_Analysis

system
You are a helpful assistant. The assistant first thinks about the reasoning process in the mind by using Belief-Desire-Intention (BDI) framework and then provides the user with the answer. The reasoning process and answer are enclosed within <think> </think> and <answer> </answer> tags, respectively. 
Below is an instruction that describes a task. After thinking, when you finally reach a conclusion based on the customer's intention, desire and belief, clearly state the BDI thinking process within <think> </think> and then the answer within <answer> </answer> tags.


user 
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:
User Review: When I was first looking for headphones, I was running through all the ways I could block out the insanely loud (and incredibly distasteful) music that my dorm roommate was playing at all hours of the day. My first venture was through BOSE's collection of noise-cancelling headphones, which easily ran over several hundred dollars. Being a college student, I didn't have much money to spare, and I opted for the Koss QZ-99, which was only $41 off Amazon--and included free shipping for Amazon Prime customers.

So far, the sound quality is only mediocre at best--the bass is almost nonexistent, but the sound comes in with very little disruption from the outside. The headphones are big, bulky, somewhat heavy, and *very* tight on the ears, especially for big-headed people like me. The headphones are decently comfortable because they fit snugly around the ear, rather than sitting on top of the ear and squishing all of your ear parts. There is a Mono/Stereo switch about halfway down the headphone wire, which can be somewhat inconvenient if you have to squeeze the wire through a very tight spot, but the ability to switch between the two is helpful for those who like to fiddle with their sound functions. In addition, there's a sound knob on the left side, but it's unmarked, so sometimes you may forget that your sound isn't turned all the way up. Although it looks like the headphone jack is extremely short in the display picture, you can actually stretch that up to about 20 feet, if the thing you're plugging the wire into is stable enough. However, the part that I was most excited about--the noise reduction--disappointed me the most. I guess I should have expected less-than-great quality for sound blocking, since I *did* pay only $41 for these, but they block about the same amount of sound as if I cupped my hands over my ears. Sound from conversations still manage to creep into the headphones, and unfortunately, it barely even drowned out my roommate's loud music at all.

However, for quieter, ambient noises, this product blocks them all out. The past week my roommate was working on a paper--without music--and he complained to me that I was typing on my keyboard too loudly (the sounds of which were drowned out completely by these headphones).

Also, some people have complained that the thin metal is sharp enough to cut your hand with. This is completely false. While it does have flat and not rounded edges, I think it's easier to cut your hand on paper than it is to cut it on the metal on this product.

Bottom line--a mediocre product with little noise reduction capability. It might be better to shell out a few more dollars for a higher quality product.

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


assistant
Answer: C: neutral