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

Input:
It did not work on the first day I tested.  So, I returned an bought the KitchenAid one.  I should listen to the negative reviews on The Waring one.

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