Instruction: Given the user's review, identify the user's sentiment from the listed options. Answer using one of the options.

Input:
After about 2 years of reliable use, the bottom melted.

Potential observations to prevent this from happening to anyone:
* The temperature required to sustain steam was higher than usual. Normally on this burner I reduce the setting down to 5 once steam is escaping from the main vent. Today I needed to use a burner setting of 7 to maintain a gentle rattle of the weight. (For comparison,  6 is the setting I usually use cook scrambled eggs when I'm not in a hurry, 7 is the setting I use to cook bacon & 8.5 is what I use to stir fry.)

* Molten metal began to leak about minute 18 according to my kitchen timer.

* Steam was still escaping from the top throughout and there was water left over at the end. The food within wasn't burned, either.

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