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:
I wanted to purchase a very nice stereo headset to use with this high tech Personal Development Program. They suggested the SONY MDR V600. MY daughter suggested going to [...]. Don't know why I didn't think of it first because I ordered my textbooks while in Graduate School from them.

I am very pleased with my headset. I knew I would because [...] has only offered and given me the BEST service. I am always recommending them. I recommend these headphones for anyone in need of good quality audio clarity.
Thank You.

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