This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: ECG and Arrhythmia 2, Subject name: Medicine
Which drugs are involved in bradycardia algorithm? 
Select and explain. 
A. Atropine, Dopamine, Epinephrine, B. Atropine, norepinephrine, Dopamine, C. Atropine, Isoproterenol, Norepinephrine, D. Atropine, Dobutamine, Amiodarone
A: Atropine, Dopamine, Epinephrine
Answer: A: Atropine, Dopamine, Epinephrine 
Explanation: Management of symptomatic bradycardia : Atropine( First line drug) If patient is still unstable, TCP (Transcutaneous pacing) is recommended In case TCP is not available, two drugs dopamine and epinephrine are recommended If patient is still unstable, transvenous pacing is done.