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

Input:
I bought this camera four days ago and this review may be premature. Nevertheless, I've taken great shots and posted them on my web site. I already printed photos and explored the many creative possibilities in a short amount of time. I probably lost sleep since getting the digicam. Just kidding.
I would have rated this item five stars but having to buy the expensive power supply kit and an additional rechargeable battery irked me. The battery that came in the package lasted for a short amount of time.

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