If a rupees equal to two, what is the value of four B over A? Okay? So if you take a look at this, it just looks like they flip this over, and they multiplied it by four, right? So a over b is equal to two. If they flip this, then this is really two over one. If you flipped over one, you get one over two, and then the multiply that by four, so if we multiply this by four, we'll get four over two, which is just two.

So there you go. Your answer is C.