Which Is True About Managers

Which is true about managers?

A) Being a good manager means having answers available right away; staff will then learn to respect and trust the manager.
B) A good manager understands that they must motivate their staff to ensure that the staff performs to the best of their abilities.
C) Delegating is particularly difficult for people with strong technical skills, but delegating will enable managers to learn management skills.
D) Management must ensure that staff understands the specifics of their job, not necessarily why things are done the way they are