Instruction: Given the user's review, identify the user's sentiment from the listed options. Answer using one of the options.

Input:
As a faithful Sony product purchaser, I was shocked to hear from the receiver of this "Gift" that after an accumulated 12 hours of play, Side A suddenly decided NOT to operate properly. On that note ... I requested a replacement through Amazon and was promptly taken care of. Again ... This one faulty item certainly does NOT curtail me from a Sony purchase.  My brother-in-law was delighted... until the defect. But is just as delighted that his gift is being replaced.  Thank you Amazon, for your integrity and AAA customer service.

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