What Is the Director's Primary Responsibility

What is the director's primary responsibility?

A) to envision the main lines of the production and provide the artistic leadership to realize that vision
B) to find the funding to support the concept
C) to start with a concept and then find the play,the funding,the producer,and the staging to accommodate it
D) to transmit the concept to the producer,who,in turn,will transmit the concept to the designers and the actors