Situation 25.1 the Following Are Positioned in Sequence: a Source of a of a Beam

Multiple Choice

Situation 25.1
The following are positioned in sequence: A source of a beam of natural light of intensity Io;three ideal polarizers A,B,and C;and an observer.Polarizer axis angles are measured clockwise from the vertical,from the perspective of the observer.The axis angle of polarizer A is set at zero degrees (vertical) ,and the axis angle of polarizer C is set at 50 degrees.
-In Situation 25.1,polarizer B is set so that the beam intensity is zero at the observer.The two possible axis angle settings of polarizer B are:

A) 40° and 90°
B) 40° and 130°
C) 40° and 140°
D) 90° and 130°
E) 90° and 140°