Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to make ravioli lasagna [title] Preheat the oven and prepare a pan. [step] Turn the oven on to 350 degrees f (180 c). Get out a 9 x 13-inch (23 x 33-cm) baking dish.

Ending1: Rinse the base skin of 1/4 cup of cooked ravioli flesh with water. Place a towel in the bottom of the pan. Ending2: Spray the pan with nonstick cooking spray. Use a pastry brush to dust the area with extra dry flour. Ending3: Spray it with cooking spray to ensure the ravioli lasagna doesn't stick. Set the pan aside while you make the lasagna. Ending4: Spray and grease it with non-stick cooking spray. [title] Line the bottom of the pan with nonstick greasing spray.

Answer format: ending1/ending2/ending3/ending4