[单选题]
In the Compton effect, as the scattering ang:,bailr- .d b.vz,fdag2,fth le increases, the frequenoe8q i7nwa r3kx5 21.recq:tycy of the X-rays scattkrcqixeqn 2.8r at3e1 5:o yw7ered at that angle
A. increases.
B. decreases.
C. does not change.
D. varies randomly.