Examine these instructions. Which format change would make them easier to read and follow? Instructions for Operating a Microwave Oven

Place the food item on a plate or in a container.
Ensure that the plate or container is microwave-safe.
Open the door of the microwave.
Place the plate or container on the microwave turntable.
Close the door of the microwave.
Set the cook or heat time.
Press START.
Wait for the cook or heat cycle to complete.
A.
Replace the step numbers with letters of the alphabet.
B.
Group each of the steps in the form of a paragraph.
C.
Align all the steps to the center.
D.
Set off the caution as a note or bullet point within the steps.
E.
Write all the steps, separated by commas, in a single sentence.