For a gene or a locus to be considered polymorphic it must satisfy the following two conditions must be present in

A) all males and females.
B) two or more sequence variations in at least 10% of the population.
C) two or more sequence variations in at least 1% of the population.
D) two or more sequence variations in at least 10% of children,since not all may reach adulthood.
E) two or more sequence variations in at least 1% of children,since not all may reach adulthood.