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

Input:
User Review: I purchased 4 different MP3 playing CD players and this one was the best one by far.  I tried to go cheap with the others, but this one was well worth the money (You may be able to shop around at other e-tailers for a better price -- hint hint).
This model has backlighting.  This is great, because I use it at night a lot.  It also has a wired remote (also acts as an extension for your headphones).  I use this at the gym so I can put the unit on the floor, and it won't skip at all.  Other people might put it in their backpack and just keep the wired remote outside their backpack for easy access.  It only takes two AA batteries and it comes with two rechargeable ones!  This is excellent.  This is one of the main reasons I purchased this model.  This by itself is worth upgrading from the RioVolt SP100.
This model also has an excellent LCD display.  It has a much higher resolution than the other RioVolts and the best display of all the models I have tried.  Most others only fit 8 characters or so on a line with LCD characters that resemble an alarm clock.  This one uses a nice dot matrix display.  It also has excellent ID3 tag (MP3 artist and track information) support.  Navigation through the folders is easier than any other unit that I purchased.
Oh yeah -- don't forget the FM tuner!  The reception isn't that great, but it works!  But then again, why would you need it if you can fit 10+ hours worth of music on one CD?
One thing I don't understand is why the wired remote does not have an LCD display like the SP100.  I also wish it came with "street-style" (around the back) headphones.  It came with ear-bud phones and foldable over-the-top phones that stunk.  I ended up buying some nice Sony sport street-style headphones to use at the gym.
My Other purchases (these are all units that I returned):
My first purchase was a Philips model that I could not get to work at all.  I returned it the same day.
My second purchase was the lowest end Rio - the SP90.  The display stinks.  It is tiny.  Half of the display is used to show people dancing - for what reason, I do not know.  There is no backlighting, so it is impossible to change tracks on a CD with 170+ songs on it at night.  This one also skipped a lot.  I returned this after one week.
My third purchase was an RCA model.  This one skipped a lot and would jump tracks for no reason.  It took 4 AA batteries that it went through in half a week.  I returned this after one week.

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


assistant
Answer: A: very positive