Instruction: Given the user's review, identify the user's sentiment from the listed options. Answer using one of the options.

Input:
I've used many headsets as my job requires me to be on the phone often.  However, I've had none that have the clarity of this plantronics device.  Happy I selected this headset.

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