What Is the Correct Order for the Application of Koch's

Multiple Choice

What is the correct order for the application of Koch's postulates?
I.Inoculate suspect agent into test subject and observe that subject develops disease of interest.
II.Isolate and culture suspect agent in the laboratory.
III.Find suspect agent is every case of disease of interest but not in healthy hosts.
IV.Recover and isolate suspect agent from test subject.

A) III, I, IV, II
B) IV, I, III, II
C) I, II, III, IV
D) III, II, I, IV
E) IV, I, II, III