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'.

Question: Mycobacterium tuberculosis complex includes the bacillus that causes human tuberculosis (Mycobacterium tuberculosis hominis, Koch's bacillus), as well as other mycobacteria, among which are the following, except one:
Options: <1> Mycobacterium bovis. <2> Mycobacterium africanum. <3> Bacillus Calmette-Guerin (BCG). <4> Mycobacterium microti. <5> Mycobacterium avium-intracellulare.
5