Glucagon: a. functions like epinephrine in the liver and like insulin in muscle. b. functions like insulin in the liver and like epinephrine in muscle. c. functions like epinephrine in the liver to enhance breakdown of glycogen but has minimal effect on muscle d. functions like insulin to enhance uptake of glucose by the liver but has minimal effect on muscle. e. functions like epinephrine in the liver to inhibit breakdown of glycogen but has minimal effect on muscle.