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've had a pair of these in service off and on since sometime in the 1990s. I have a lot of headphones, some of them costing well over $1000 and these MDR-V6 headphones are easily among my top 3 but at a small fraction of the cost. They sound fantastic and rival phones costing 5-10x as much. Plus, they've held-up for more than 20 years and I still use them today - albeit with replacement ear pads. I've had phones costing > $1,000 from the likes of Sensaphonics last a couple years of light use before dying. The MDR-V6s are great!

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