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

Input:
Trash your Logitech trackball and buy this.  My Logitech trackball died of old age the other day (6 years), and I bought this one in its place.  What a blessing in disguise!  It fits my larger hands better, it's more comfortable and fluid to use, and it's additional two side buttons are very handy.
Trash your old mouse and buy this one.  You'll thank yourself you did.

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