Four-Year-Old Ashwin Enters His Parents' Room While They Are Having

Four-year-old Ashwin enters his parents' room while they are having sex.What should his parents do in this situation?

A) Lunge for a towel to cover up first and then scold him for barging in.
B) Gently remind Ashwin that they would like their privacy at that point in time.
C) React very matter-of-factly and tell Ashwin that it is "grown-up time."
D) Ignore Ashwin and continue the act because he is too young to understand.