Bill lent some money to his two brothers. He wrote down the amounts so he would not forget. The list shows the younger brother with −$18.50 and the older brother with $0. Which of the following statements best describes the amounts?

The older brother paid Bill $18.50, and the younger brother does not owe him any money.
The older brother owes Bill $18.50, and the younger brother does not owe him any money.
The younger brother paid Bill $18.50, and the older brother does not owe him any money.
The younger brother owes Bill $18.50, and the older brother does not owe him any money.