It Is Found That at a Laser Bounced Off the Surface

Multiple Choice

It is found that at a laser bounced off the surface of a liquefied gas is completely polarized when the angle of incidence of the laser beam is 45.70 degrees from the vertical. What is the index of refraction of this material?

A) 1.43
B) 1.397
C) 1.412
D) 1.091
E) 1.025