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

Input:
Do not buy. As mentioned, the pieces are not properly threaded and they do not work. I ordered four different sets and they were all defective. IKEA's customer service is horrible, too.

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