The splined ends and gears attached to the A992 steel shaft are subjected to the torques shown. Determine the angle of twist of end B with respect to end A. The shaft has a diameter of 40 mm.

a) Theta = (TL)/(GJ)
b) Theta = (2TL)/(GJ)
c) Theta = (TL)/(2GJ)
d) Theta = (TL)/(3GJ)