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

Input:
It doesn't whistle. You have to pay attention to the cooker all the time. You have to just randomly guess when the food will be cooked.  since there is no  concept of whistle, it often over cooks or burns the food.

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