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
Pulsus Bigeminus is seen in therapy with - 
Select and explain. 
A. Beta blockers, B. ACE inhibitors, C. Digitalis, D. Calcium channel blockers
C: Digitalis
Answer: C: Digitalis 
Explanation: Pulsus Bigeminus is recognized as a cause of digitalis toxicity.
Pulsus Bigeminus is a disorder of rhythm (irregular rhythm; arrhythmia) most commonly caused by Premature Ventricular Contracons that results in a pulse with irregular rhythm that alternates in amplitude (pressure) from beat to beat.
The most common cause of Pulsus Bigeminus is Digitalis and Pulsus Bigeminus is recognized as a cause of digitalis toxicity