A Pendulum Bob of Mass M Is Set into Motion $\theta$

A pendulum bob of mass m is set into motion in a circular path in a horizontal plane as shown in the figure.The square of the angular momentum of the bob about the vertical axis through the point P is

A) m² gl³ sin⁴ $\theta$ /cos $\theta$
B) m² gl³ sin³ $\theta$ /cos $\theta$
C) m² gl³ sin² $\theta$ /cos $\theta$
D) m² gl³ sin $\theta$ /cos $\theta$
E) m² gl³ sin² $\theta$