Question: Learn how to soak a ring before using a cleaning paste.
Option 0: Put a cup of water into the measuring glass and microwave to a boil, remove the glass from the microwave and place the ring in the water and add citric acid to soak for five minutes.
Option 1: Put a cup of water into the measuring glass and microwave to a boil, remove the glass from the microwave and place the ring in the water to soak for five minutes.
Answer: 1