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: Which vector would be used to clone a DNA fragment up to 15 Kb ?: 
 Options:  <1> BAC. <2> Plasmid <3> Cosmic <4> YAK. <5> Phage
