A Patient Has Been Told That Her Unborn Child Has

A patient has been told that her unborn child has Down syndrome. Which information will the nurse include when teaching the patient about the etiology of this disorder?

A) "Down syndrome is the most common type of trisomy, which occurs when there is an extra chromosome."
B) "Most Down syndrome is caused by monosomy."
C) "Down syndrome occurs as a result of breaks in chromosomes called translocations."
D) "Deletions or loss of part of a chromosome is a common cause of Down syndrome."