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: If after 200 microliters of a 10-4 dilution (10 exp. -4) of a broth on an agar plate grows 100 colonies, the estimated number of colony forming units per mL of broth is: 
 Options:  <1> 0.2 x 104 <2> 2 x 106 <3> 5 x 104 <4> 5 x 105 <5> 5 x 106
