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

Input:
I BACK UP ALL MY IMPORTANT DATA ON THIS ZIP DRIVE, SO EASY TO USE, SO FAST TO RECOVER AND SAFE TO STORE BY ITSELF. NO MAINTENENCE OR SPECIAL EQUIPMENT NEEDED TO OPERATE.

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