C. It is a planned way to pay a small amount once a month until you have paid off your debt.
The installment plan, also known as the "buy now, pay later" plan, allowed consumers to purchase goods on credit and pay for them over time in installments, typically on a monthly basis. This was a significant development in the consumer economy of the 1920s, as it allowed more people to afford expensive items such as automobiles and household appliances.