What is the most logical next event?

How to set your refrigerator temperature
Purchase an appliance thermometer designed for refrigerators and freezers.
Place the thermometer inside a glass of water, and put the glass on your refrigerator's middle shelf.
Check the temperature on the appliance thermometer after 5 to 8 hours.

OPTIONS: A. The temperature should register between 38 f and 40 f (2 c to 4 c) for safe food storage. Make sure that your thermometer is safe to put in water; not all are.; B. Remove the thermometer from the refrigerator and let cool on a cooling rack if your refrigerator has one. Remove the thermometer from the refrigerator, and let cool slowly on a cooling rack, until warm throughout.; C. Place the appliance in your refrigerator for a 1 hour time if you used an electric thermometer. Wait 10 to 15 minutes for the thermometer to beep, indicate the temperature is at 99.4f, and read your refrigerator temperature again.; D. If the temperature is not close to expected, use a plastic bottle with a thermometer. Switch up the temperature to 400f/200c.;
A.