One of the Creation Poems of the Rig-Veda Provides the Earliest

One of the creation poems of the Rig-Veda provides the earliest allusion to __________.

A) the belief that men are superior to women
B) the four-fold class (varna) system that would later evolve into the complex Indian caste system
C) the universe being essentially the body of a giant
D) the importance of human sacrifice for the ordering of social life
E) none of the above