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

Input:
I bought my Microsoft Intellimouse about 2 years ago and I'm still using it.
The contours of this mouse are perfectly designed for the human hand, when I had my old mouse that came with my computer, my hand would hurt all  if I used it for more than about 20 minutes, and I'm only a occasional  mouse user, but with the Microsoft Intellimouse, I find myself enjoying my  mouse much more.
The Intellimouse also has many great features, most  notibly the scroll wheel. With the scroll wheel on the mouse you can scroll  through documents and webpages without having to move the mouse all the way  to the little arrows and keep pushing the mouse button.
Through and  through, the Microsoft Intellimouse is a great mouse: comfort wise, feature  wise, and price wise.

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