Plumage in Chickens Is of Two Varieties,a "Hen" Pattern and a "Cock

Plumage in chickens is of two varieties,a "hen" pattern and a "cock" pattern.They differ because the trait is sex-limited - that is,males have different feather arrangements than females.The autosomal gene H controls the trait in this manner: $$\begin{array} { l l } \underline{\text { Genotype } }& \underline{\text { Phenotype }} \\ H H & \text { hen pattern in both sexes } \\H h & \text { hen pattern in both sexes } \\h h & \text { hen pattern in females and cock pattern in males }\end{array}$$ Henrietta is one of a flock of hens who has chicks with Boris,the lone rooster.He has tantalizingly beautiful plumage in the cock pattern.If Henrietta is genotype Hh,the probability that a male chick will have his father's gorgeous plumage is

A) 1/8.
B) 1/4.
C) 1/2.
D) 1/3.
E) 2/3.