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:
I listened to the system before I bought it.  The systen is easy to install.  For someone like me, who can barely change a lightbulb, I actually ENJOYED the set-up process.  Bose makes it idiot proof and entertaining.  The sound is just great and it is easy to use.  I haven't left my couch in 3 days.  If you want a good ststem to play CD's and DVD's and want to watch television and movies in surround sound, this system is a great choice.  It wasn't the cheapest product available, but the sound is great and the equipment is so unobstrusive, it is nearly invisible in my family room.  No hype, just good sound.
Go for it.  No regrets here....

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