This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
One has to be careful about hypoglycaemia when patient gives history of taking this drug: 
Select and explain. 
A. Chlorpropamide (Daonil), B. Furosemide (Lasix), C. Corticosteroids (Wysolone), D. Theophylline (Deriphylline)
A: Chlorpropamide (Daonil)
Answer: A: Chlorpropamide (Daonil) 
Explanation: Chlorpropamide: It is a long-acting sulfonylurea oral hypoglycaemic, found to reduce urine volume in DI of pituitary origin, but not in renal DI. It sensitizes the kidney to ADH action. 
DI = Diabetes Insipidus.
Due to its long duration of action, one has to be careful about hypoglycaemia, when patient gives history of taking this drug.
Reference: Essentials of Medical Pharmacology Eighth Edition KD  TRIPATHI  page no 644