Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to make mole sauce [title] Heat a tablespoon of olive oil in a large stockpot. [step] Heat the oil on medium high until it swirls easily in the pot. [title] Brown the chicken backs in the oil.

Ending1: [step] Place the pork in the hot oil for about 4-6 minutes until it just begins to brown. [title] Turn off the heat when the pork is al dente and the chicken has turned brown at both sides. Ending2: [step] Place them in the pot and let them brown on one side for about 3 minutes. Turn the chicken backs over and let them brown on the other side. Ending3: [step] Add some browned chicken backs and cook until tender. Then remove the grease from the chicken backs and add a tablespoon of boneless quesadillas. Ending4: [step] Once the oil is hot enough to touch, add the chicken backs and continue cooking until it is just beginning to brown. [substeps] Make sure that the chicken backs are cooked and very little is left behind before you take them out.

Answer format: ending1/ending2/ending3/ending4