2. Juanita is a United States citizen living in the U.S. She has a husband and three children, all of whom are citizens of a foreign country and have never been to the U.S. Her husband's name is Carlos and the children's names are Marta, who is 13; Rosa who is 19 and married; and Carlos, Jr., who is 22 and unmarried. Juanita wishes to file immigrant visa petitions for all 4 family members. May she? If so, under which visa categories would each family member fall? Please explain.