What is the most logical next event?

How to clean a microwave with baking soda
Remove the turntable and support ring, and sprinkle baking soda.
Set these pieces aside, on the kitchen counter or in the sink. Sprinkle the baking soda across the bottom of the microwave.

Pick your answer from:
1). The baking soda will act as a natural abrasive agent and dislodge a stuck-on debris. Clean your microwave with water, a note-taking oil, and dish detergent..
2). Remove the screws holding these pieces together. Reattach the microwave in the same fashion you removed it..
3). Alternatively, you can use a baking soda paste to clean your microwave. Mix two parts baking soda to one part water and use a butter knife to apply the paste to the inside of the microwave..
4). You will need a strong oven mitt to do this. Place 1 cup (114 g) white vinegar (softened) in the microwave..
3).