If one of Rogalas main customers declared bankruptcy in 2013, what journal entry would be used to write off its $20 balance? (If no entry is required for a transaction/event, select "No Journal Entry Required" in the first account field. Enter your answers in millions (i.e., 10,000,000 should be entered as 10).)

1. Record the write-off in 2013 of a certain customer account which is not collectible due to bankruptcy declared by the customer in 2013 totaling $20.