Instruction: Carefully assess the user's review for any strong expressions of sentiment, either positive or negative. Based on your analysis, select the most fitting sentiment option from the provided list as output.

Input:
I ordered this in May.  It is now October, and the probe reads 100 degrees Fahrenheit at room temperature, and seems to be consistently 30 degrees off.  The window for return has expired, but this is not a good quality thermometer.

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