What Do the Legend of Greystoke and the "Wild Boy

What do The Legend of Greystoke and the "wild boy of Aveyron" have in common?

A) They are both fictitious accounts of infants lost in the wilderness.
B) They both illustrate the importance of heredity in the socialization process.
C) They were identical twins separated at birth, one living in Africa and one in France.
D) They are both stories about feral children raised in social isolation from other humans.