What happens next in this paragraph?

How to find the surface area of cylinders 
Visualize the top and bottom of a cylinder. 
A can of soup is the shape of a cylinder. If you think about it, the can has a top and a bottom that are the same.
Pick from: A. To get the surface area of a cylinder, first focus on the top and bottom circles of the can. Many cans of soup bend in half to make a flat surface. B. Both of these ends are the shape of a circle. The first step to finding the surface area of your cylinder will be to find the surface area of these circular ends. C. The top should be solid for a tin can, and the bottom should be solid for a tube can. Then, look at the top and bottom of the form. D. Remember the first two measurements from step 7 when shopping for your cans: the top and bottom of the cylinder should be almost exactly the same. A can of soup is also known as a " works surface.
B.