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

Input:
As a soccer coach, I needed a good reliable whistle that was louder than tweens and teens. This definitely was the perfect whistle. I bought a few different colors, since I coach teams of different colors.
This is really loud, when need be. They could hear it across all of the soccer fields, which stretch out well over 15 acres. (That was the I figured out NOT to use when I'm upset.)

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