What Was Considered the Major  Weakness of the League of Nations

Multiple Choice

What was considered the major  weakness of the League of Nations?

A) The United States never joined the organization.
B) The League had no means of enforcing protections written into the treaties.
C) The borders assigned to countries across Europe made no sense.
D) Germany was refused admission to the League, which fueled further hatred.
E) League members often were at odds with each other because of major differences.