Answer:
I would think it would be what the child looked like so if they looked more of the ethnicity then that is what they are classified.
B is the one that bests explains the caste system. A caste system is when a society divides people in from birth into a pyramid of social class. The higher the person was on the pyramid the more privilage that person had. Furthermore the people from the class above your class were considered your superiors. In the end, B is the only reliable answer.
what is the pattern. yes i checked multiple times there is no pattern
The Answer To Your Question Is Yes.
A. China and Mongolia, which is where the Gobi Desert is located.