Which of the following is not evident that the pattern of cleavage is determined by factors in the egg cytoplasm rather than by genes of zygote

• A

  Cleavage is prevented by injection of a protein synthesis inhibitor

• B

  Cleavage is not affected by injection of inhibitors of $RNA$ synthesis into the zygote

• C

  Interspecific hybrid zygotes go through normal cleavag but die at the beginning of gastrulation

• D

  The direction of the first division of cleavage in the snail Cepaea is determined by the mothers genotype