Instruction: Carefully assess the user's review for any strong expressions of sentiment, either positive or negative. Based on your analysis, select the most fitting sentiment option from the provided list as output.

Input:
These things were terrible.  The "Boom" would keep pulling the ear but out of my ear and I couldn't keep anything in place. The cord was very flimsy... It was just an all around bad buy.  Wouldn't do it again.

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