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

Input:
Works great to build calluses for guitar playing, as long as you get the "Rough Rider" caps to put on it.  After two weeks of using this product with the caps, I could play guitar easily and form chords effortlessly - my guitarist husband noticed immediately the difference in my playing.  As a full-time working adult, I don't have all day to sit in my room learning to play guitar.  With limited free time, using the GripMaster keeps my fingers well callused because I can use it during work (I mostly use a computer at work).  My guitar playing time is more productive because I can practice longer.

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