The correct answer is B, as the Sudras were servants while the Kshatriyas were warriors in the hindu society.
In the Hindu culture, a Sudra is the member of the fourth and last caste, that of the serfs (laborers who worked for food and roof).
The Kshatriyas were one of the castes of Hinduism, the political and warrior caste. The king and queen of a region must be of the Kshatriya caste.
Kshatriyas were the secular power responsible for the reinforcement of karma taught by Brahmin priests.
