Q7.37. In a customer meeting gathering requirements for the new online store your company is setting up, the customer states that “once the customer enters their billing information we should initiate a credit check. However, the customer should be able to continue his or her processing while the credit check is being processed.” How could you best model this?

(a) By starting another activity diagram for the credit check process

(b) As an asynchronous flow in a sequence diagram

(c) As an alternative path in a use case

(d) As an event in a state diagram