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 wear these for work. They are comfortable and easier than putting separate knee pads and shin guards on. They don't breath as easy though. After a days work, my legs have been sweating like crazy and stink. The knee pads hold onto the smell.

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