A 60 ^$\circ$ Prism Has a Refractive Index of 1 $\circ$

A 60 ^$\circ$ prism has a refractive index of 1.64 for blue light and 1.61 for red light.Calculate the difference in the angle of emergence from the opposite face of the prism for a beam of red and a beam of blue light that are both incident at an angle of 60^o.

A) 0.4 ^$\circ$
B) 0.0 ^$\circ$
C) 1.3 ^$\circ$
D) 3.9 ^$\circ$
E) 2.7 ^$\circ$