Which One of the Following Best Illustrates a Blended Family

Which one of the following best illustrates a blended family?

A) After his wife dies, Jim marries Nancy, who helps him take care of his 6-year-old son Peter. Later, they add a newborn baby girl to the family.
B) Seth, who is Jewish, marries Maria Elena, who is Catholic. Together they work out religious beliefs and practices that the two of them will share.
C) Nadia, age 28, marries Marcus, who at age 53 has never been married before. Their friends affectionately call their union a "May-December wedding."
D) Kevin and Lucille adopt two children who were born in other countries. Their son comes from Ecuador, their daughter from Romania.