Please choose the correct ending to complete the given sentence: Cars & Other Vehicles: [header] How to paint a bumper [title] Remove the plastic bumper cover or mask it off with painter's tape. [step] In order to keep from painting other parts of the car, you can either remove and paint the bumper separately or leave the bumper attached and carefully mask off the car body. Removing the bumper works best when you're repairing any scratches or cracks before repainting.

Ending1: [title] Try an acid paint polish remover. [step] Acid paint removers generally have alcohol in them. Ending2: [substeps] Use painter's tape or masking tape to secure the bumper if it is painted. [title] Set up a clear area to put the bumper and cover. Ending3: [title] Wash the bumper cover thoroughly with degreaser and water. [step] Scrub the surface well with a tack cloth along with soapy water. Ending4: [title] Start with the bumper left on the ground. [step] Be sure to fully clean the bumper with water before stripping it.

Answer format: ending1/ending2/ending3/ending4