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:
Buying headphones is a problem because most of the time you can't try them out before you buy them.  With wireless it's even worse because there are very few merchants that have them out for demonstrations.  Well after researching wireless headphones, I decided on these mainly because of the great reviews and the name.  These are my first pair of wireless headphones and I am very impressed.  The sound quality was excellent, there is very little ear fatigue and the battery life is excellent.  This set comes with 2 so you'll always have a freshly charged one.  I dont' have a specific time length of the batteries but I usually am able to use them for 2 to 3 hours at a time without recharging them for about an entire week.  Occasionally the signal will be scrambled for whatever reason but it is rare.  The only major complaint is that you can't really lie down with them because the headphones are a bit bulky but otherwise, these are fantastic headphones.  The top rated one for wireless headphones was an Advent 2.4gh in consumer reports and the rs65's were a close second.  But after researching, apparently there really isn't that much of a difference between 900mhz and 2.4ghz and I've been very happy with them. I would highly recommend these.

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