The sales budget has two primary parts. Part 1 projects total sales on a monthly basis and Part 2 calculates the month in which the sales will be received in cash. For which one of the following businesses would Part 1 and Part 2 be exactly the same?

a. A business that only allows customers to pay by credit card at the time of sale

b. A business that allows customers to partially pay at the time of service and pay the rest over 60 days

c. A business that requires all customers to prepay for services at least 60 days in advance

d. A business that allows monthly payment plans for all customers who have bad credit