Instruction: Analyze the user's review text and determine the overall sentiment expressed, then choose the corresponding sentiment option from the provided list (A: very positive, B: positive, C: neutral, D: negative, E: very negative) based on the identified sentiment.

Input:
What can one say about a product that, when it works as it is supposed to, it is almost completely invisible? No discernible quality reduction with the filter on, and the added comfort of knowing I am protecting my non-replaceable lens. Clearly a great buy, very reasonably priced, and works as it is supposed to.

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