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

Input:
I bought the red and the green bars.  I started with the red and as I improved, I moved to the green.  This was the only thing that helped my tennis elbows.  In fact they healed completely in a few weeks after starting to use the bands.

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