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

Input:
My wife was using a small food processor to grind her coffee. It was loud and whiny. This electric grinder works great and is much quieter so I can sleep when she gets up to make coffee.

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