A meter stick has a 1 kg mass hanging from one end and has a 3 kg mass hanging from the other end. If the meter stick has no mass, where is the center of mass of this system? How large is the torque about:
A) The center of mass is at the 50 cm mark, and the torque is 25 Nm.
B) The center of mass is at the 25 cm mark, and the torque is 25 Nm.
C) The center of mass is at the 75 cm mark, and the torque is 25 Nm.
D) The center of mass is at the 50 cm mark, and the torque is 50 Nm.