This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S, Subject name: Medicine
Sinus bradycardia with MI T/T- 
Select and explain. 
A. Atropine, B. Digoxin, C. Calcium channel blocker, D. Propranolol
A: Atropine
Answer: A: Atropine 
Explanation: Sinus bradycardia is a common arrhythmia in patients with inferior or posterior acute myocardial infarctions (AMIs). The highest incidence, 40%, is observed in the first 1-2 hours after AMI. Use of atropine in patients with acute myocardial infarction and sinus bradycardia. Atropine is the drug of choice for management of patients with SB and hypotension and is effective in the treatment of ventricular arrhythmias as well as conduction disturbances in patients with inferior myocardial infarction Ref Davidson 23rd edition pg 455