Which of the Following Is Not a Reason Why Two

Which of the following is not a reason why two children born to the same parents [not identical twins] are unlikely to have the same genetic makeup?

A) Crossing over recombines portions of sister chromatids.
B) Fertilization provides a new pairing of chromosomes.
C) Each sperm or egg has a random assortment of chromosomes, half from each pair.
D) Chromosomes align themselves independently during meiosis I.
E) Since though they are produced at different times, all sperm will be genetically different from all other sperm.