Task: Sentiment_Analysis
Instruction: Determine the sentiment expressed by the user in her review from the provided choices, and respond by selecting one of the available options.

Input:
Polarizers are surpisingly expensive, with the nicest ones ranging up to or even over 100 dollars... this one, at right around 20$ seems just about right. I get nice deep blue sky colors with it, deeper greens, and that cool transparent/anti reflection/glare effect shooting into water, which is just what i wanted. I really don't plan on using it all that much, so anything more expensive just would not have been worth it to me. That being said, I'm not sure how big of a quality difference in image quality there might be between a filter of this price and some of the more expensive ones, but for me this one is just perfect.

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