1.2 A construction company always let its customers make installment payments. When the company signs a contract with a customer, the customer is required to pay one percent of the total price as down payment. So far, no customer has paid in full at once. Which set of cardinality correctly shows this relationship?

(a) Sales (0,1)-(1,N) Cash receipts

(b) Sales (1,1)-(1,N) Cash receipts

(c) Sales (0,N) (1,1) Cash receipts

(d) Sales (1,N)-(1,1) Cash receipts