Teacher: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'.
Teacher: Now, understand the problem? Solve this instance: Question: Which of the following laboratory tests is of choice in the diagnosis of autoimmune hemolytic anemias due to hot antibodies ?:
Options: <1> Ham's test <2> Test of Coombs. <3> Autohemolysis test with glucose. <4> Osmotic resistance test. <5> Electrophoresis of membrane proteins.
Student:
2