A transaction caused a $15,000 decrease in both assets and total liabilities. This transaction could have been _____?

Repayment of a $15,000 bank loan.

Purchase of a delivery truck for $15,000 on credit.

An asset with a cost of $15,000 was destroyed by fire.

None of these.

Repaying a loan decreases assets (cash) and liabilities (loan payable) by the same amount.

Other options involve either increasing liabilities or affecting only assets, not both.