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

Input:
Works fine as a basic set of earphones. However, the one-size-fits-all foam earplug doesn't quite fit right and pops out quite easily. Instead, move on and look for a set with rubber "caps" that they often ship with 2-3 different sizes - these fit better, stay put without fatiguing the ear.

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