Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to broil chicken breasts [title] Buy chicken breasts. [step] You can purchase either fresh or frozen chicken breasts. If you choose frozen chicken breasts, however, keep in mind that you'll have to completely defrost them before broiling.

Ending1: Leftover chicken breasts can be cooked while fully thawed. [substeps] Purchase a pre-cooked chicken breast directly from your local deli or farmer's market. Ending2: You can broil chicken breasts with or without skin. [title] Rub each chicken breast with olive oil or another similar oil. Ending3: To prepare them, begin by taking out any nipples, nailing them in place or cooking them with butter or olive oil. [title] Turn on a broiler and toast the chicken breasts. Ending4: [substeps] Frozen chicken breasts can usually be found in the refrigerated section of your grocery store. Pre-cut chicken breasts typically have a thickness of 1 to 3 inches (2.5 to 3.8 cm) at the top, which usually indicates freshness.

Answer format: ending1/ending2/ending3/ending4