A man and a woman both have polydactyly (i.e., six fingers on each hand), a trait which is determined in this example by a single gene. They have four children, none of whom have polydactyly. What is the probability their next child will have polydactyly?
A) 0.0
B) 0.003
C) 0.08
D) 0.25
E) 0.75