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 headphones I ordered (Sony MDR-XB500) for my desktop PC and entertainment system had a too short cord. Now I can listen to music or movies from anywhere in my living room. The sound quality seems unaffected using these headphone extension cords. I'm satisfied with this purchase.

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