Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to make pumpkin alfredo [title] Boil the fettuccine pasta in a pot of salted boiling water. [step] Following the instructions directed on the package, cook the pasta until it is al dente, usually taking about 7-8 minutes. Drain in a colander once cooked.

Ending1: [substeps] Check that the pasta is soft and there are no lumps of cheese. If there are, you may want to add more pressure for a minute or two. Ending2: [title] Melt the butter in a large skillet pan over medium-high heat. [step] Stir with a wooden spoon until fully melted. Ending3: [title] Peel and seed the eggs and wash them in running water. [step] Once boiled, peel and seed the eggs again. Ending4: [substeps] If you have a lot of unused pasta, you may instead omit this step. You can also drain the whole package beforehand and add them to a blender to puree later.

Answer format: ending1/ending2/ending3/ending4