A uniform rod of legth `L` is free to rotate in a vertica plane about a fixed horizontal axis through `B`. The rod begins rotating from rest. The angular velocity `omega` at angle `theta` is given as
A. `sqrt(((6g)/(L)))sin((theta)/(2))`
B. `sqrt(((6g)/(L)))cos((theta)/(2))`
C. `sqrt(((6g)/(L)))sintheta`
D. `sqrt(((6g)/(L)))costheta`