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

Then he shows how to use fans to ventilate the room. He takes a scour and begins to scour the wall paper. he

Choices: (A). shows how to detail and process paper paper.; (B). then puts a towel on the back of the wall paper and wipes it off with his hand.; (C). uses a paint roller to soak the wall paper for easy removal.; (D). straightens it out and removes the wax paper.;
(C).