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

Input:
they are easy to install, they are easy to sight. have not yet shot the gun to see if they move or how they react. they certainly priced right & arrived fast thanks Amazon as usual great performance.

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