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: Medicine
A 40 year old male is admitted with acute inferior wall myocardial infarction, half an hour later BP is 80/50 mmhg and heart rate is 40/mt with sinus rhythm. The most appropriate step in the management of this patient would be - 
Select and explain. 
A. Admission of normal saline 300 ml over 15 minutes, B. Immediate insertion of temporary pacemaker, C. Intravenous adminstration of atropine sulpate, D. Intravenous adminstration of isoprenaline 50 m/minute
C: Intravenous adminstration of atropine sulpate
Answer: C: Intravenous adminstration of atropine sulpate 
Explanation: None