Multi-choice problem: Continue writing the next sentence in this paragraph:

The person measures ingredients in a glass bowl then adds them to an electric mixer to blend. The person brushes on oil to the parchment paper then sets it into a cooking tin. the tins

Options are:
a). are added to an oven to cook.
b). are then dished out and served with hot water until the dough is flattened.
c). then begin to bake in the oven.
d). are filled with various flavor and sizes.
a).