i dont get this?????

Question 20 Under the allowance method required by GAAP, Bad Debt (Uncolletable Account) Expense is recorded: when the loss amount is known with certainty when an individual account is written of for mounts the company estimates it will not collect several times during the accounting period D Question 21 What is the impact to the Balance Sheet when a company records the necessary adjustment to Prepaid rent to recognize Rent Expense? Put it differently, what is the impact on the Balance Sheet, when the company records: Rent Expense and Decrease in Prepaid rent Decrease Assets, Decrease Liabilities Increase Assets. Increase Liabilities Assets Remain unchanged Decrease Assets. Decrease Equity