Evaluate the impact of epinephrine binding to its receptor on glycogen metabolism in liver cells.

• A. It has no effect on glycogen metabolism.
• B. It inhibits glycogen phosphorylase, decreasing glucose release into the bloodstream.
• C. It activates glycogen synthase, increasing glycogen storage.
• D. It leads to the activation of glycogen phosphorylase, increasing glucose release into the bloodstream.

Answer: (D)