1 man, 3 women, and 4 boys can do a piece of work in 96 hours; 2 men and 8 boys can do the same work in 80 hours, and 2 men and 3 women can do it in 120 hours. In how many hours can the same work be done by 5 men and 12 boys?
A. 60 3/13 hours
B. 40 hours
C. 43 7/11 hours
D. 100 hours
E. 40 7/11 hours