Instruction: Determine the sentiment expressed by the user in her review from the provided choices, and respond by selecting one of the available options.

Input:
Words cannot describe the frustration I have right now after trying for six hours to get this thing hooked up to my computer. I was on the phone with one of their tech reps for over an hour as well, and he finally gave up. It's a problem with the drivers... I cannot believe that any company in America could put out such a shoddy product with such weak documentation... (The rep, though he couldn't help me, did try, so they'll get a small point for that. But don't waste your time, buy something good...

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