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: Under physiological conditions, the secondary structure of the most frequent DNA in the cells is: 
 Options:  <1> B-DNA. <2> Z-DNA. <3> A-DNA. <4> G-DNA. <5> H-DNA.
