All of the following statements about Process Flow Diagrams are true except: Select one: a. they help to identify repetitive or misunderstood steps in a process b. they depict tasks, flows, waits and decisions they depict the relationship between machines and the products of the organization d. they can be drawn to show the relationships between different workers or departments Warranty expense the cost that a business incurs for the repair or replacement of goods that has sold. is an example of which of the following? Select one: a. Prevention cost b. External failure cost C. Appraisal cost d. Internal failure cost