Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to clean a dull stainless steel sink [title] Choose a moderate abrasive. [step] Abrasives can scratch your sink's finish, so use them only for an occasional restoration project, or to remove stubborn stains. Try stainless steel polish, whiting, talc, or baking soda.

Ending1: If your sink is severely dirty, consider using a mild cleaner instead. [substeps] Steel pulls away dust from the finish, so use it sparingly on the stainless steel. Ending2: Apply one of these to a slightly damp cloth. [title] Rub in the direction of the finish lines. Ending3: [substeps] These can be found in the cleaners section of most grocery stores, or you can purchase them directly from the bottle. [title] Rinse off the polish with cool running water. Ending4: [substeps] Avoid those with zinc, as they're more likely to scratch your stainless steel. Line the sink's rim with aluminum foil or newspapers to make cleaning easier.

Answer format: ending1/ending2/ending3/ending4