Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to make orange chocolate mug cake [title] Place the orange in a measuring cup and cover it with water. [step] Set half of a small orange with the end trimmed in a glass measuring cup. Pour enough water over the orange so the cup is filled to the 1 cup (237 ml) mark.

Ending1: [substeps] If there are any uneven edges or bubbles in the water, you can trim the cup to size. A medium cup (80 ml) is ideal, but any larger will cause the fruit to wilt. Ending2: Place the other half in the freezer to cool to room temperature. [substeps] If you don't have a measuring cup, you can even get two. Ending3: [title] Place the mug in the freezer. [step] Don't close the lid so the chocolate doesn't freeze. Ending4: [substeps] Use a microwave-safe measuring cup that holds at least 1 pint (473 ml). [title] Microwave the orange until it's soft and drain it.

Answer format: ending1/ending2/ending3/ending4