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:
Great locks, all keyed the same ... great for having just one key for all of your guns, but also having plenty of spares.  Hard to beat Master.

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