Under What Circumstances Does an INDIRECT Interlocking Directorate Exist

Under what circumstances does an INDIRECT interlocking directorate exist?

A) When both management and the board establish corporate strategic management.
B) When a corporation's employees are included on its board.
C) When one or more individuals on one board also serve on a board of a second firm.
D) When all board members are also employed by the corporation.
E) When two corporations have directors who serve on the board of a third firm.