Type 1 and Type 2 Diabetes Mellitus Have Different Underlying

Type 1 and type 2 diabetes mellitus have different underlying causes. Type 1 diabetes is characterized by a loss of the insulin-producing cells of the pancreas, leading to insulin deficiency. Type 2 diabetes, at least in its early stages, is characterized by a loss of sensitivity to the hormone insulin by cells that normally respond to the hormone. Which step labeled in the diagram is inhibited in BOTH type 1 and type 2 diabetes (either directly or indirectly) ?

A) step a: glycogen synthesis
B) step b: hormone release
C) step c: sensory input to the pancreas
D) step d: hormone release
E) step e: glycogen hydrolysis