This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Autonomic nervous system, Subject name: Pharmacology
Propranolol is contraindicated in diabetes mellitus because it 
Select and explain. 
A. Causes hyperglycemia, B. uses seizures, C. Masks the hypoglycemic symptoms, D. Causes hypotension
C: Masks the hypoglycemic symptoms
Answer: C: Masks the hypoglycemic symptoms 
Explanation: Ref; KD Tripathi pharmacology 7th edition (page no; 146) Propranolol delays recovery from hypoglycemia due to insulin and oral antidiabetics. It masks the warning signs of hypoglycaemia mediated through sympathetic stimulation (tachycardia, tremor).