Task: Question Answering
Input (English): Question: Form B of DNA: 
 Options:  <1> It is formed by a double helix levorotatory with two antiparallel nucleotide chains. <2> It is wider and longer than form A. <3> It has pairs of nitrogenous bases perpendicular to the axis of the helix. <4> Corresponds to dehydrated DNA. <5> It is the minority form presented by DNA under physiological conditions.
Output (English): 3