[单选题]
In the Compton effect, as the scattering angle yi /. l7u;uj9(pmzriiw 29dqz increases, the frequeng-qvq4f(q)m) dc hbr;cy of the X-rays scattered a vcfq)q 4bqh;-rg dm)(t that angle
A. increases.
B. decreases.
C. does not change.
D. varies randomly.