Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to make rainbow jello [title] Select a tray or baking pan. [title] Clear a spot in your refrigerator large enough to accommodate the pan. [title] Set clear plastic cups in the pan or tray.

Ending1: [title] Add two ounces (170 g) of sugar. [step] If you wish to use a more vanilla bean flavor, use sugar that is sweeter than the vanilla bean. Ending2: [title] Plug the pan in, or leave it unplugged in the oven. [title] Line a large dome-shaped cookie tray with plastic wrap. Ending3: [title] Fill a larger pan with a thick film of calcium. [step] Place a frosting bulb in the pan. Ending4: [title] Prepare one batch of jello according to the directions on the packet. [step] For an authentic rainbow effect, start with red and work your way upwards through the color spectrum (or choose purple and work downwards).

Answer format: ending1/ending2/ending3/ending4