A Light Ray Strikes a Smooth Surface of Glass at an Angle

A light ray strikes a smooth surface of glass at an angle α to the perpendicular. What angle will the reflected ray make with the perpendicular to the surface?

A) 2α on the opposite side of the perpendicular to the incident ray
B) 0°; the ray will always reflect along the perpendicular, a condition necessary for the focusing of light.
C) the same angle α on the opposite side of the perpendicular to the incident ray
D) the same angle α on the same side of the perpendicular, returning along the incident direction