Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to make rainbow grilled cheese sandwiches [title] Sauté the vegetables. [step] Allow the red, orange, and yellow bell peppers to sauté in a large oiled skillet over medium heat. Cook and stir for 5 minutes before adding the purple cabbage.

Ending1: Toss in the chopped green onions and panko. Sauté for 5 more minutes before withdrawing the pan from the heat. Ending2: Turn off the heat when the vegetables turn soft and tender. [substeps] If using green peppers, add them before the last minute if your barbecue is delayed for too long. Ending3: Continue to sauté for another 2 minutes. Add the spinach into the mixture and remove from the heat. Ending4: Transfer the vegetables back to the skillet. [title] Add the tomatoes and sauté them for a few minutes before the broccoli and peppers stick.

Answer format: ending1/ending2/ending3/ending4