A) 1/2 black: 1/2 white (These are phenotype ratios.)
B) 4/4 gray (This is a phenotype ratio.)
C) 1/2 BB: 1/2 BW (No BB bunnies are produced by this mating, so this is the incorrect genotype ratio.)
D) 4/4 BW (All the baby bunnies are BW for their genotype.)