Polarization: in the Figure, the Orientation of the Transmission Axis

Multiple Choice

Polarization: In the figure, the orientation of the transmission axis for each of three polarizing sheets is labeled relative to the vertical direction. A beam of light, polarized in the vertical direction, is incident on the first polarized with an intensity of 1000 W/m². What is the intensity of the beam after it has passed through the three polarizing sheets when θ₁ = 30°, θ₂ = 30° and θ₃ =60°?

A) 141 W/m²
B) 316 W/m²
C) 433 W/m²
D) 563 W/m²
E) 188 W/m²