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:
This mouse is great!  The fact that it uses Optical technology is very hepful and you will never have to worry about cleaning out the ball and the rollers inside the mosue again.  The extra buttons on the side allow you to  customize commands such as cut,paste,copy, etc...
This mouse is light and  easy to use.  It is definitely worth the price.

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