Assuming sexual reproduction and that no mutations have occurred, which of the following offspring genotypes is NOT possible for the given parent genotypes?

Parents and their genotypes
Four offspring chromosomes.
A. Genotype A
B. Genotype B
C. Genotype C
D. Genotype D

Without the specific parent genotypes provided, it is not possible to determine which offspring genotype is not possible. The outcome of offspring genotypes is dependent on the combination of alleles from both parents, and without knowing the specific alleles present in the parent genotypes, it is not possible to determine which offspring genotype is not possible.