Recessive epistasis is defined as:
A. a situation in which a gene pair in homozygous recessive condition masks the effect of one or both the member of another gene pair
B. a situation in which the dominant allele of the first gene pair masks the effect of both the members of the second gene pair and the dominant allele of the second gene pair masks the effect of both the members of the first gene pair
C. a situation in which one allele does not allow its alternative form to express
D. a situation in which the dominant allele of one gene pair masks the effect of both members of another gene pair
