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'm not using this step for aerobics or anything high-intensity, but for rehab on my knee. I needed a step I could adjust from about 4" (where my knee is now) up to 12" or so for when it's feeling better. This step fits the bill and isn't as big as the standard aerobics steps out there, so easier to hide away when I'm not using it. It's stable enough for my low-intensity work, but I probably wouldn't try jumping on it or anything. The risers don't lock in very securely, and because of the shape (vs longer steps), I'd be worried it would come apart. As it is, I'm always careful to step up close to the center whenever I'm using risers, because it has wobbled a couple times when stepping too close to the edge. In all, though, it fits my needs and can't beat the price!

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