In humans, occasionally a baby is found that has the XX chromosomal karyotype but is phenotypically male. Which of the following statements might be a CORRECT explanation for at least some of these unusual cases?

A) A mutation has occurred in the SRY gene making it inactive.
B) An extra pierce of autosomal chromosome 15 is probably present in the genome but is too small to be detected.
C) A small piece of autosomal chromosome 15 is missing but is too small to be detected.
D) A piece of chromosomal material containing an active SRY gene is found attached to one of the X chromosomes.
E) The ratio of number of X chromosomes to number of sets of chromosomes is incorrect.