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:
I saw this product on America's Test Kitchen on PBS.  Of course the $100+ knife sharpener they tested was rated the best, but the show did give mention to this knife sharpener.  WOW!  It really works.  It has given new life to some old cheap knives I was using.  I'm thinking about ordering several more and using them as Christmas stocking stuffers.

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