Instruction: Carefully assess the user's review for any strong expressions of sentiment, either positive or negative. Based on your analysis, select the most fitting sentiment option from the provided list as output.

Input:
First, I have to say that I've been using this mouse for the past 4 years.  When I change computers, I take this mouse with me.  Its light weight and ergonomic design fits comfortably in my hand.  I love the forward and back buttons for web browsing.  Life on the internet is so much easier.  People have their preferences and may think it too light or bulky, but I guess I am biased because it is all I use.  The only thing I would replace it with is a reliable, wireless version.

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