Please Use the Following Information to Answer the Question(s) Below

Please use the following information to answer the question(s) below.
A woman who has blood type A positive has a daughter who is type O positive and a son who is type B negative. Rh positive is a trait that shows simple dominance over Rh negative and is designated by the alleles R and r, respectively. A third gene for the MN blood group has codominant alleles M and N.
-Which of these statements is true?

A) In humans, the 23rd pair, the sex chromosomes, determines whether the person is female (XX) or male (XY) .
B) Single, haploid (n) sets of chromosomes in ovum and sperm unite during fertilization, forming a haploid (n) , single-celled zygote.
C) At sexual maturity, ovaries and testes produce diploid gametes by meiosis.
D) Sexual life cycles among different types of organisms are identical with respect to the relative timing of meiosis and fertilization.