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: ASO-PCR is a technique of: 
 Options:  <1> Detection of mutations without identifying the type. <2> Detection of specific mutations. <3> Sequencing <4> DNA amplification. <5> Molecular cytogenetics
