Write the next sentence in this paragraph:

How to diagnose refrigerator problems
Check that the power cord is plugged in all the way.
Pull out the refrigerator if needed and press the plug firmly into the outlet. Check your appliance's electrical cord for damage.

Options are: I. If there is any damage on the cord, you should take immediate action. Older appliances might not connect to the refrigerator using power cords, and others might overheat easily. II. If you are stuck, don't force the plug into the outlet. Simply remove the plug and replace the power cord. III. Detach the dryer wire from the top of the dryer. A utility wire should have arrived with your dryer earlier than a regular wire. IV. Any exposed wire, kinks or cuts in the cord might make the appliance malfunction. If this is the case, do not use the cord and contact a repairman.
IV.