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

Input:
Excellent product, easy to apply and works as advertised. Optical correction appears accurate. I can now see my computer,gauges and camera buttons crystal clearly. This is my third set ( one for each mask and I increased a correction on one mask over time). Be sure your mask is properly cleansed before application. If it is a new mask make sure you clean the inside with some toothpaste or similar cleanser 2 or 3 times and rinse clean to prevent fogging. Then follow the directions for application. My product was packaged appropriately and arrived earlier than the expected delivery date.

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