Problem: A patient with Type 1 diabetes mellitus who is on NPH and regular insulin split-dosing presents with complaints of early morning rise in fingerstick blood glucose. A review of an at-home glucose test reveals increased morning levels. After an increase in the evening insulin dose, the problem worsens. This is most likely an example of: A. Insulin resistance B. Cortisol deficiency C. the Somogyi effect D. pawn phenomenon