A couple comes for genetic counseling because of advanced maternal age. The counselor notes that the father of the pregnancy has a large vertical scar on his upper lip. While taking the family history, the counselor asks both individuals if either has a history of birth defects, and they deny any such history. Which of the following is the BEST next step for the counselor to take?
A. Inquire again about the history of birth defects on both sides of the family, using cleft lip as an example
B. Ask the father about the scar on his lip, explaining that this information is essential for risk assessment
C. Avoid embarrassing the father, and tell the couple that ultrasound can detect certain birth defects like cleft lip
D. Tell the perinatologist about the scar, so she can ask the couple again about a history of birth defects.