A Lizard with a Striped Tail and a Normal Head

A lizard with a striped tail and a normal head is crossed with one having a normal tail and a spotted head. All of the F₁ progeny are normal (no stripes or spots) . What progeny would be expected to be produced by mating the F₁ progeny with each other, if the genes conferring stripes and spots were on different chromosomes?

A) equal numbers of normal, striped, spotted and striped, and spotted
B) 3 striped : 1 spotted
C) 9 striped and spotted : 3 spotted : 3 striped : 1 normal
D) 9 striped : 3 spotted : 1 striped or spotted
E) 9 normal : 3 striped : 3 spotted : 1 striped and spotted