The Following People Enter the Health Clinic Together: an Unmarried

The following people enter the health clinic together: an unmarried man and his year-old son,an unmarried woman with a year-old daughter,and the man's married brother,who is separated from his wife.During the assessment it is determined that both men work and contribute to the household,where all of them live.Which of the following best describes the "family"?

A) The group consists of three families: the man and his son, the woman and her daughter, and the brother, who is married even though he and his wife are separated.
B) There are two families involved: first, the unmarried man and woman and their two children, and second, the brother, who is married even though he and his wife are separated.
C) There is no family here, only three adults sharing resources between themselves and two biologically related children.
D) The family includes whoever the adults state are family members.