Consider the two rectangular gates shown in the figure. They are both the same size, but gate A is held in place by a horizontal shaft through its midpoint and gate B is cantilevered to a shaft at its top. Now consider the torque T required to hold the gates in place as H is increased. Choose the valid statement(s): 

(a) TA increases with H. 

(b) TB increases with H. 

(c) TA does not change with H. 

(d) TB does not change with H.