Detailed Instructions: 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".
Problem:[header] How to paint a garage floor [title] Start with a basic clean-up. [step] Wipe up any liquids (such as automotive fluids or any other chemicals) with a cloth. Then clear the floor of dry debris. <sep> (A) Also clean off any surfaces with the cloth. This will help the paint finish stick better to concrete. (B) [substeps] Any residual cleaner you can pick up could be put in trash can near the garage door to add some extra sawdust. Likewise, any mud, grease, or paint that remains on the floor could be rid of with a few gentle shakes. (C) Sweep up any dust or solids with a broom. [substeps] If your concrete floor is brand new, extensive cleaning shouldn't be necessary. (D) Then use a scrub brush or a soft rag to scrub away any paint-like discoloration. [substeps] Make sure to scrub around all surfaces of garage floor.
Solution:
C