Four Pure Lines of Guinea Pigs (Black,brown,gray,and Tan)are Used in a Series

Four pure lines of Guinea pigs (black,brown,gray,and tan) are used in a series of crosses.The results are as follows:


What is the expected phenotypic ratio in the F₁ of cross 6?

A) 50% black females,50% black males
B) 50% black females,50% gray males
C) 50% black females,50% tan males
D) 50% brown females,50% black males
E) 50% tan females,50% tan males