A 26-years old pregnant woman, a known case of Type- Il diabetes mellitus, was shifted from oral anti diabetic drug to insulin therapy. She is also a known case of migraine for which she is receiving Tab. Propranolol as prophylaxis. A. Classify Antidiabetic drugs. (5) B. Why was she shifted from oral anti diabetic drug to insulin therapy? (5) C. What precautions should be observed in the treatment of this patient considering her pregnancy status and concomitant medication? (5) D. Describe the adverse effects of insulin therapy.