Question: To clean an oven.
Option 0: Make sure you have gotten out all the crumbs that are inside the oven then scrub with a sponge and cleaning solution in order to clean out all the grime.
Option 1: Make sure you have gotten out all the crumbs that are inside the oven out first and then set the oven on the clean setting or broil to burn off any excess grime.
Answer: 1