What Managerial Action Is Important When Supporting the Delegation of a Task

What managerial action is important when supporting the delegation of a task to a subordinate?

A) Always requiring a maximizing quality outcome
B) Frequently reassuring the employee that if they are incapable of completing a delegated task, it will be reassigned
C) Drafting a preliminary plan of how the task will be redone if the outcome does not meet stated expectations
D) Occasionally providing learning or "stretching" opportunities for employees