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

Input:
Parts were broken. I had to buy another set for parts. It was inconvenient and frustrating ultimately because I was trying to avoid going to ikea in the first place.

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