This question is from "things fall apart" by chinua achebe

what does the medicine man mean when he says ekwefi’s child is an ogbanje?
a: it is a blessing from the earth goddess.
b: it is the reincarnation of one of her ancestors.
c: it is an evil spirit that reincarnates in her womb.
d: it is a mischievous girl who acts more like a boy.