In Some Regions of North Eastern Africa, Why Is Circumcision

In some regions of North Eastern Africa, why is circumcision performed?

A) Because of the belief that the foreskin is unclean
B) Because of the belief that to be male is to endure pain
C) Because of the belief that all children are born part male and part female and the foreskin is the female part on an otherwise male child
D) To differentiate sexually mature males from sexually immature males