In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D".

The video then shows the two boys mixing ingredients together. They roll the dough into balls and place them into an oven. the boys <sep> (A) put cigarettes inside the oven before the timer. (B) then bake the dough in front of the fireplace. (C) lay down their oven covers and look around the room. (D) take the cookies out of the oven and begin eating them.
D