Instruction: Given the user's review, identify the user's sentiment from the listed options. Answer using one of the options.

Input:
Great seatposts for road or mountain. A very similar alternative is made by control tech, I have 4 Thompson seat posts in my fleet and they are all performing well.

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