Compare the Sudras to the Kshatriyas. Which of the following best describes how they were different?
a. The Sudras were rulers while the Kshatriyas were servants.

b. The Sudras were servants while the Kshatriyas were warriors.

c. The Sudras were priests while the Kshatriyas were traders.

d. The Sudras were farmers while the Kshatriyas were workers.