Why Have Traditional Healers in Africa Become Part of the Health

Why have traditional healers in Africa become part of the health delivery system,despite negative Western attitudes toward African traditional healing?

A) They were seeking training to become doctors themselves.
B) Modern AIDS drugs have been derived from many plant compounds used by these healers.
C) They have the backing of local political authorities.
D) They were already there and had existing trust relationships;they could relieve some symptoms and were willing to alter some of their procedures to minimize spreading infection.