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 bought this wireless router to use with my laptop in my house. After the installation, it worked for a half hour, then lost the connection. Then a day later, it's totally dead - the self-diagnosis light was on. After spending time with Linksys tech support (he has no idea what is what), I was told that the unit was defective. Got a replacement from Amazon, the same thing over again - the second unit worked for a few minutes! No way that I was going to try the third one.
...

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