7. A pendulum consists of a ball of mass m suspended at the end of a massless cord of length L as shown above. The pendulum is drawn aside through an angle of 60∘ with the vertical and released. At the low point of its swing, the speed of the pendulum ball is
(A) gL
(B) 2gL
(C) gL/2
(D) gL
(E) 2 gL