Instruction: Determine the sentiment expressed by the user in her review from the provided choices, and respond by selecting one of the available options.

Input:
It works well as a respirator but the blue rubber part leaves a tacky material on your face,It feels like silicon on your face. I washed it several times but it continued to happen. I stopped using it because it felt gross on my face and I bought a unit from North that doesn't melt on your face. I kept it in my truck for an emergency and it turned to a gel,I had to throw it out.

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