Instruction: Assess the user's sentiment in the provided review and select the appropriate sentiment option from the list as the answer.

Input:
This the first trackball I've used, that feels like a mouse. It takes a whole ten minutes to get used to and after that you'll never want to use a standard mouse again. Sure you could buy another basic mouse but think of  how many of those things you've gone through in a year. Spend the extra  money it's worth it.

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