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

Input:
I purchased this as a Christmas gift for my wife.  After nearly 2 months of use, I'm a believer -- the volume of telemarketer calls is down dramatically.
My only complaint is the cost.  I'd think they'd do better selling it at $...

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