Instruction: Determine the sentiment expressed by the user in her review from the provided choices, and respond by selecting one of the available options.

Input:
Purchased this after my GP recommended this for golfers elbow. I was skeptical at first but after reading reviews I felt it was worth a shot. I only found one exercise for golfers elbow but thats all I needed. I did 3 sets of 15 per night for about a month and my golfers elbow subsided after having lived with it over a year!!  I'm now pain free for about a month and continue to use this just to keep my arm tendons flexible and avoid the same injury.

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