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

Input:
I have been using this headset for over a month with Nuance's Dragon Naturally Speaking software.  It works perfectly!  I am getting over a 99% accuracy rate!  Before you spend "big bucks" on another headset, give this one a try. I know you will be happy with it!

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