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:
I do not recommend this product, I bought a headset  usb CS. 100 koss and only worked two months

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