An organism has 18 chromosomes in its body cells. Its sex cells have 9 chromosomes.

Which statement correctly explains this?

(A)Its body cells are haploid and a result of mitosis.
(B)Its sex cells are diploid and a result of mitosis.
(C)Its sex cells are haploid and a result of meiosis.
(D)Its body cells are diploid and a result of meiosis.