It is 1925. A man sees a beautiful new radio in a shop window. He does not have enough money for it at the moment, but he decides to buy it anyway. He has a full-time job, so he is not worried about being able to pay for it in the future. What is the most likely way he will buy this radio?
A. by washing windows or cleaning floors
B. by making regular payments
C. by trading something of equal value
D. by paying for it all at once