How Did Engels Analogize the Relationship Between Man and Woman

How did Engels analogize the relationship between man and woman within the institution of marriage?

A) To that of doctors and patients
B) To that of a board of directors and stock/shareholders in a corporation
C) To that of teachers and students in a classroom
D) To that of upper-middle management and entry level employees in the workplace
E) To that of the bourgeoisie and the proletariat in society