Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to clean acrylic paint brushes [title] Wipe away paint with a paper towel or rag. [step] This step is optional, but may help. Before you clean the paintbrush with water, first wrap a paper towel or rag around the bristles of the brush and gently press to remove excess paint.

Ending1: Place the brush upright, open-ended, on a flat surface. Wipe down the bristles with a clean paper towel or rag. Ending2: [substeps] If the brush is dry, dry it with a paper towel. A paper towel was not meant to be used for this purpose and is likely to leave residue on the brush rather than help it clean more effectively. Ending3: After you have cleaned your brushes, dry them off. [title] Submerge the brush in warm water. Ending4: Wiping away the excess paint will make the washing process easier and faster. [substeps] Don't wait in between painting and cleaning.

Answer format: ending1/ending2/ending3/ending4