According to Richard Tremblay from the University of Montreal, Who

According to Richard Tremblay from the University of Montreal, who is most likely to become a violent teenager?

A) Frank, an aggressive 6-year-old whose 24-year-old mother is employed as a cashier
B) Dan, an aggressive 6-year-old whose 24-year-old mother is unemployed
C) John, an aggressive 6-year-old whose 20-year-old mother is employed as a cashier
D) Sam, an aggressive 6-year-old whose 20-year-old mother is unemployed