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:
I received this mat on Monday. I used it for an hour at exercise class on Tuesday, used it for a Pilates class on Wednesday, and that's when I noticed the tear by the handle. Already??? I couldn't even get three classes out of it. So disappointed.

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