A 25-year-old female with type 1 diabetes mellitus has maintained good glycemic control for several years. Recently she has gained 10 pounds and joined a group exercise program. By the end of her first 1-hour aerobics session, she is dizzy, nauseated, and feels faint. Which underlying mechanism is the most likely explanation for this episode?

1. A)Stimulation of glycogenolysis in the liver
2. B)Translocation of GLUT4 to the cell membranes of myocytesGABARITO
3. C)Stimulation of gluconeogenesis in the liver
4. D)Inadequate delivery of oxygen to the muscle
5. E)Stimulation of glycogenolysis in the muscle