An environmental change that leads to the production of decreased levels of cyclin expression would tend to _______ the activity of the CDK. This would lead to _______ phosphorylation of RB, which in turn would lead to _______ cells being stopped at the R point. .
A) increase; increased; more .
B) increase; decreased; fewer .
C) increase: decreased; fewer .
D) decrease; increased; fewer
E) decrease; decreased; more