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:
We left this outside to be our kids trampoline, but the legs began to bend after a few months. The main frame isn't flat either.  They still use it, but I am just waiting for it to break.  It wasn't left in the grass to get wet from the sprinklers.  We leaned it up against the house each night, so it wouldn't get wet.  I guess it isn't meant to be outside?

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