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:
These headphones provide extremely high quality sound (including excellent bass).  You will notice a huge difference if you are used to cheap headphones or low-end speakers.

They are also durable.  In the three years that I've owned mine, I haven't had any problems except for the foam earpads deteriorating.  These can be replaced for $7 on Amazon, however.

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