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

Input:
I own this unit.  I attempted to purchase  earphones from Olympus but after phoning them 5 times, and getting put on hold each time, I gave up.  I was never able to speak to a live person.
The unit itself does not have enough audible power with batteriess or by AC connection.  I do not recommend this unit.

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