If an Experimenter Wanted to Slow Down Receptor Turnover, One

If an experimenter wanted to slow down receptor turnover, one thing they can do is to increase cAMP levels and protein kinase A activity. This means that any subsequent changes in gene expression entails

A) increasing the expression of lysosomal enzymes.
B) decreasing the expression of lysosomal enzymes.
C) increasing the expression of fast-type calcium channels.
D) decreasing the expression of fast-type sodium channels.
E) increasing expression of the ACh receptor subunits.