can you please solve this with an explanation

7) Cher and Ross Gregg have one daughter, Sally, who is 16 years old. In November of last year, the Greggs took in Sally's 16-year-old friend Angie, who has lived with them ever since. The Greggs have not legally adopted Angie but Sally often refers to Angie as her "sister." The Greggs provide all of the support for both girls, neither girl receives any income during the year, and both girls live at the Greggs' residence Which of the following statements is true regarding whom Cher and Ross may claim as dependents for the current year? A. They may claim Sally as a dependent qualifying child and they may claim Angie as a dependent qualifying relative. B. None of these statements are true. C. They may claim Sally as a dependent qualifying child; they are not allowed to claim Angie as a dependent D. They may claim Sally as a dependent qualifying child and they may claim Angie as a dependent qualifying child