According to the following sales and receipt UML class diagram, consider the relationship between sales and cash receipts, if the business rule states that each sales must be billed and paid individually; no combined payment is allowed, how would the cardinality show? 0..* 1..* 1..1 0..* Inventory Sales 2 1..1 0..* Employees 1..1 0.. Cash 3 Select one: a. (1..1) on the sales side 4 ?..? 1..1 0.. Customers Cash Receipts o.. O b. 0..*) on the cash receipt side . (1..1) on the cash receipts side d. (1..*) on the sales side 1..1