Teacher: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".
Teacher: Now, understand the problem? Solve this instance: [header] How to clean and maintain area rugs [title] Vacuum your area rug regularly. [step] This prevents dirt from building up. Vacuuming your area rug regularly helps to keep your home clean and allergy free. <sep> (A) If you notice any spots that need extra vacuuming, then make an appointment to see if they need vacuuming. [title] Sweep the floor often to get rid of pesky smells. (B) Take a vacuum cleaner and vacuum out the floors, windowsills, and walls of your home. Be sure to move your rug around every four to six months to prevent your rug from becoming over grown. (C) To get the maximum amount of dirt out turn your rug upside down first and vacuum the back of the rug. This looses deep down dirt to the top of the fibers. (D) [substeps] Any time you switch rugs, use the brush attachment. This will help to get into all the nooks and crannies.
Student:
C