The beta-2 adrenergic receptor is a membrane-bound protein that regulates several cellular processes, including the synthesis and breakdown of glycogen. The receptor binds specifically to the hormone epinephrine. The binding of epinephrine to the beta-2 adrenergic receptor triggers a signal transduction cascade that controls glycogen synthesis and breakdown in the cell. A simplified model of the signal transduction cascade is represented in Figure 1.Figure 1. A simplified model of the signal transduction cascade triggered by epinephrine binding to the beta-2 adrenergic receptorWhich of the following outcomes will most likely result from the inactivation of the beta-2 adrenergic receptor?A. The cellular concentration of cyclic AMPAMP will increase.B. The enzymatic activity of protein kinase A will increase.C. The activation of glycogen phosphorylase will increase.D. The rate of glycogen synthesis in the cell will increase.