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: Secondary chromosomal constrictions contain: 
 Options:  <1> Single sequence DNA <2> Ribosomal genes. <3> Genes micro-RNAs. <4> Centromeric DNA. <5> Genes of histomnas.
