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:
The Gripmaster is the perfect unit for hand and arm muscle exercise. Recently having surgery on my shoulder my physical therapist had me using one for weeks. After my time in PT I missed using it and order one for myself. The red one or medium tension allows for both the husband and wife to use the unit. Just sitting it close to the TV remote allows me or my wife to pick it up and start using it 3 or 4 times each week without thinking much about it. You will even start using it while walking around the house. It is amazing how your grip and hand strength will improve within a month. There are copy cats out there but Gripmaster is proven and used by professional clinics everywhere. It is worth the order and 5 stars.

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