Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to slow cook ribs [title] Prepare the ribs for the grill by trimming away any visual fat and then applying your favorite rub, or just season them with salt and pepper. [title] Prepare the propane grill by turning it on and letting it heat up, or by lighting a charcoal grill and then letting it heat until the coals begin to turn grey. [title] Place the ribs on the grill.

Ending1: [substeps] Grilled ribs need to be cooked low and slow. If using a gas grill, place the ribs on the grill, turn the heat down to low, and cook them covered for 30 minutes without looking at them. Ending2: [step] Tamp them to a shape of approximately 3 inches (7.6 cm) on each side. This ensures that neither the top of the ribs nor ribs touch during the cooking process. Ending3: [title] Sear the trimmings, if use, till they are golden brown. [title] Remove the ribs, taking care not to let them flip over, or be charred by the smoke. Ending4: [step] Any legs that have been cut off will make decent charred ribs. [title] Turn the ribs slowly to make sure there are no bulging or wasted legs.

Answer format: ending1/ending2/ending3/ending4