Instruction: Carefully assess the user's review for any strong expressions of sentiment, either positive or negative. Based on your analysis, select the most fitting sentiment option from the provided list as output.

Input:
I first used this strap in a Physical Therapy facility where I was going for lower back pain. Loved it so much I decided to buy one to have at home. Even better it comes with instructional booklet that shows you all the areas you can stretch and how. I recommend this product

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