The Gupta empire was made up of
Brahims a.k.a the priests
Vaishyas a.k.a merchants and tradesman
Shudras a.k.a Peasants
Kshatriyas a.k.a warrior and rulers
The fourth choice satisfies this list.
Because the people of India with many different languages and cultures have understood the one God in their own distinct way.
I believe it is A) Input because input costs means the cost of direct material, direct labor, and other overhead items devoted to the production of a good or service.