Instruction: Assess the user's sentiment in the provided review and select the appropriate sentiment option from the list as the answer.

Input:
I love the retro look. For my big head, they don't fit ideally and the adjustments aren't that helpful.

But they sound great, they fold up easily, and they have a lifelong warranty that I hope to never use.

The sound isolation isn't that impressive but aside from that, these are great headphones.

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