Instruction: Given the user's review, identify the user's sentiment from the listed options. Answer using one of the options.

Input:
This review is for Panasonic RP-HT21 Lightweight Headphones with XBS port for increased bass response. Sound is fine for cassette audiobooks, which is what i bought them for. But i don't use them because even when adjusted short as possible, the earphones fall about half-way down my ears, which makes them pretty uncomfortable. Also, loose. I am 5'7" adult female with average head size.

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