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

Input:
This product works well in terms of cooking with or without pressure. I'm using both 4-quart and 6-quart ones.

There are 3 problems though: within a week of beginning using it, I noticed rust around the screws on the covers.
Another problem is the small rubber plug is a little loose, and can be easily washed away.

The last problem is the strong unpleasant smell from the rubber string lasted a long time, even after I washed it thoroughly with soap and warm water.

I used to have other pressure cookers from China, which have better design on the cover, and never got rust anywhere, no
such unpleasant smell to begin with.

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