Light from a 560-Nm Monochromatic Source Is Incident Upon the Surface

Multiple Choice

Light from a 560-nm monochromatic source is incident upon the surface of fused quartz (n = 1.56) at an angle of 60 $\degree$ .What is the angle of reflection from the surface?

A) 15 $\degree$
B) 34 $\degree$
C) 60 $\degree$
D) 75 $\degree$