Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to make microwave fudge [title] Grease a baking pan. [step] Coat an 8-inch (20-cm) baking pan with a layer of butter, oil, or cooking spray. This will prevent the fudge from sticking to the pan, and make it easier to remove once the fudge has set.

Ending1: [substeps] Do not use a microwave-safe baking pan. You may burn your fingers while coating the pan. Ending2: [substeps] Alternatively, you can also line the dish with parchment paper instead. [title] Heat the sugar, milk, and butter. Ending3: [substeps] Buttermilk is the easiest butter to use. It is not too stringy, but is easily digestible. Ending4: [title] Place both sides of each fudge cube into the pan. [step] The fudge should bounce up over the edge.

Answer format: ending1/ending2/ending3/ending4