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

Input:
Bought for my mom as a Christmas present. I knew she loved popcorn and I couldn't resist buying it. She was SO disappointed. It did nothing but burn the popcorn. It was given to someone else to use. She didn't even want to keep it. She'd rather continue to make the popcorn on the stove.

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