What Was the Major Point Made by C

What was the major point made by C. Northcote Parkinson in "Parkinson's Law"?

A) Bureaucracies have a tendency to change their goals once they have been achieved to perpetuate their existence.
B) Individuals are promoted through the ranks until they reach their level of incompetence.
C) Conforming to procedure is more important than the goal of the organization.
D) In bureaucracies work expands to fill the time available for its completion.