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

Input:
Great filter, works fine with Sigma 10-20mm f/3.5 EX DC HSM ELD SLD Aspherical Super Wide Angle lens. i had the best results.

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