In 1891, What Did Pope Leo XIII's Major Encyclical Rerum

Multiple Choice

In 1891, what did Pope Leo XIII's major encyclical Rerum novarum affirm for the Catholic church?

A) The need for an armed guard for the Catholic Church.
B) That Catholics and socialists had essentially the same belief pattern.
C) The ideals of social justice and opposition to atheistic socialism.
D) That the priests were infallible and should be followed without fail.
E) That labor unions would solve the problems of modern societies.