What Were the Goals of Monarchs Such as Catherine the Great

What were the goals of monarchs such as Catherine the Great of Russia and Frederick the Great of Prussia in supporting the Enlightenment?

A) They protected religious institutions from new ideas.
B) Expansion of royal authority over localism, religious institutions, and the nobility
C) They firmly reinforced the rights of feudal lords.
D) They secured the social order in favor of the nobility.
E) They favored a monopoly on joint-stock companies.