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

Input:
I was very dissappointed in this product from Monste.  the unit shorted out as soon as I plug it into the outlet.  would not buy another.

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