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:
The trampoline never sits flat. It always has one or two legs off the floor. It seems like it's too tightly put together that it is warped. Not impressed but works for the purpose of 4year old bouncing.

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