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:
I bought this headset to use with my cordless phone system which I use with Skype.  I have a Bluetooth headset on my left ear, and I keep this one on my right so I can answer my cell phone and the regular phone simultaneously while I am working on my computer.  I use only Motorola cell phones and Bluetooth units, and previous cordless phone headsets left a lot to be desired.  The Plantronics unit is wondeful; it's light enough that I forget it's there, and even half-deaf me can hear it well.  The adjustable hearing is great, as is the adjustable volume on the microphone.  I heartily recommend it.

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