Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to make a macaroni and cheese pizza [title] Boil the elbows. [step] Fill water in a pot and place it on a stove top to boil. Once it has boiled, pour the elbows into the boiling water and have it boil until soft.

Ending1: [substeps] You do not have to boil the elbows to make the pizza; however, blanching them brings out the broth in the soup and improves the seasoning. If you cook the elbows by themselves, you will need to cut them in half to save room. Ending2: Then pour in the salt and cook the elbow until it turns into solid state. After about 15 minutes, the elbow should appear soft, like a pancake. Ending3: Most pastas take about 10-11 minutes to be soft but check on the package directions to be sure, they usually give the exact time there. Once the elbows are fully boiled place a colander in the sink and drain all the pasta. Ending4: [substeps] Check the elbow often to make sure it is firm. Poking a fork in the elbow might create lumps.

Answer format: ending1/ending2/ending3/ending4