Definition: In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.
Input: Question: The atrial syncytium is separated from the ventricular by: 
 Options:  <1> The atrio-ventricular valves. <2> The semilunar valves. <3> The fibrous skeleton. <4> The interventricular septum. <5> The Beam of His.
