Task: Question Answering
Input (English): Question: Beta-adrenergic receptor blocking drugs: 
 Options:  <1> They cause hypotension in individuals with normal blood pressure. <2> They increase the atrio-ventricular conduction velocity. <3> They cause negative inotropism. <4> They provoke a positive chronotropic effect. <5> They increase the secretion of renin.
Output (English): 3