If Most Companies Would Like to Become Monopolies, Why Do

If most companies would like to become monopolies, why do they not do so?

A) They are unable to acquire the economic power to drive out their competitors.
B) The public is hostile to monopolies.
C) Their competitors will reduce access to credit.
D) Governments seek to prevent monopolies.
E) Bureaucracies are not sufficiently efficient to function as monopolies.