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:
The whistle is nice, especially the neon color.  It will work well for when I have to lifeguard at night.  Time will tell how long it will endure the daily use.

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