Two Polarizers Have Their Transmission Axes at an Angle $\theta$ Unpolarized Light of Intensity I Is Incident on the First

Multiple Choice

Two polarizers have their transmission axes at an angle $\theta$ .Unpolarized light of intensity I is incident on the first polarizer.What is the intensity of the light transmitted by the second polarizer?

A) I cos² $\theta$
B) 0.5I cos² $\theta$
C) 0.25I cos² $\theta$
D) I cos $\theta$
E) 0.25I cos $\theta$