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

Input:
As a former nationally ranked tennis player, I have found that the Penn championship extra duty tennis ball is the best tennis ball for everyday use on hard tennis courts. Because of a slightly thicker nap, it will last a little longer than Wilson extra duty tennis balls. This ball is not for use on clay courts because it will pick up moisture and surface material and become heavy.

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