A marine researcher compares how two different clear panels, A and B, bend light underwater. Panel A has an index of refraction of 1.47, and panel B has an index of 1.62. A light ray in water (1.33) strikes each panel at 35° to the normal. The researcher defines the percentage reduction in angle as θAθA−θB×100%, where θA and θB are the refracted angles in panels A and B, respectively. Which value is closest to this percentage reduction?
a) 13%
b) 10%
c) 4%
d) 9%