Instructions: 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: In a plasma protein electrophoresis pattern, in what region will haptoglobin migrate? 
 Options:  <1> In the region 1. <2> In the region . <3> In the region 2. <4> In the region 1 2. <5> In no position that it is not a protein.
Output:
3