Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to make spaghetti pizza [title] Preheat oven to 425 ° fahrenheit (220 ° celsius). [step] Grease a 9 x 13 inch baking dish. [title] Boil the spaghetti with the water and salt.

Ending1: [step] Add spaghetti noodles and toss them with the hot water. Continue cooking the spaghetti until the noodles are tender. Ending2: [step] Let the noodles boil and turn them frequently so they cook evenly. Don't let the noodles move around too much, otherwise they will not cook evenly. Ending3: [step] Cook until the spaghetti noodles are soft, usually about 7-10 minutes. [title] Drain the spaghetti in a colander and place it in the baking dish. Ending4: [step] Add 1 1/2 tbsp of melted butter and 1 tbsp of baking soda to make the spaghetti sauce. Stir the ingredients until they're well combined and evenly coated.

Answer format: ending1/ending2/ending3/ending4