Which of the following correctly states the law of reflection of sound?
(a) Angle between the incident ray and the surface equals the angle between the reflected ray and the surface
(b) Angle between the incident ray and the normal equals 90∘ minus the angle between the reflected ray and the normal
(c) Angle between the incident ray and the normal equals the angle between the reflected ray and the normal
(d) Angle of reflection changes with the wavelength of sound even if the angle of incidence stays the same