Instruction: Analyze the user's review text and determine the overall sentiment expressed, then choose the corresponding sentiment option from the provided list (A: very positive, B: positive, C: neutral, D: negative, E: very negative) based on the identified sentiment.

Input:
Bought this in April and installed in May.  Received great but COULD NOT get anyone to acknowledge receiving.  Bought it because we are leaving tomorrow for 2 months in Alaska towing an RV and I thought this would be good for road info and in case we have a breakdown.  After trying everything to diagnose the problem I sent it back to COBRA for repair.  Turns out it was off frequency.  So they tuned it and returned it.  Upon return, it would not receive as well and I only got acknowledgement of transmission twice out of about 50 attempts.  This was even on major freeway with big rigs going by with the CB antennas on them.  It also would only scan occasionally and would stick on stations where there was no transmission.  Called them and told them I was leaving in a week.  They authorized a return and included a UPS label but for REGULAR GROUND service from Pacific Northwest to Chicago.  I told them at the time I didn't think it could make the round trip in time and he assured me it would.  We were supposed to leave today but delayed a day waiting for this and other items.  A week after shipping there was no phone call,no email and no CB radio.  I strongly urge you to stay away from this unit and COBRA in general.  Local sporting goods store told me they stopped carrying COIBRA FRS/GMRS radios because of all the problems and now I believe it.  Pretty disgusted.

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