12. Consider a plane electromagnetic wave propagates from one medium (air, n₁ = 1.0) to the other (glass, n₂ = 1.5) at oblique incidence. Both media are nonconducting, linear, homogeneous, non-magnetic. The electric field is perpendicular to the plane of incidence. (A) The transmittance is about 99.8% ± 0.1% if the angle of incidence is 60°. (B) The Brewster's angle is about 56.3° ± 0.1°. (C) All of the above. (D) None of the above.