A Fellow Worker Was Present at His Son's Birth

A fellow worker was present at his son's birth.He was really upset because his son was born with a white substance all over his skin and no one told him what the problem was.You should tell him ____.

A) that it was probably cancer
B) that his baby probably had something wrong with it; you have never heard of such a thing
C) that the white substance was vernix and many babies have that at birth; it protects their skin in utero
D) that that was a greasy like substance that is used to help the baby emerge from the birth canal; they will wash it off later