[单选题]
A uniform rod of mass M;qh;yzhj .; le7 9twvx and length L rotatespa;u9 uvw s af*xh+e0+ around a vertical axis through its center. Twoau w u+ha9fv;e0 x*ps+ equal forces act on the rod as shown in the diagram.
The moment of inertia of the rod when rotating about its centre is $frac{1}{12}ML^2$.
Which of the following gives the angular acceleration of the rod?
A. 0
B. $\frac{6F}{ML}$
C. $\frac{12F}{ML}$
D. $\frac{24F}{ML}$
