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 wasn't sure if my Nook's battery was bad or the power cord, so I went the cheaper way of getting a new cord to check that first. This one works better than my original one did even when the old one was new.

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