Place the Following Developments in Microbiology in Order from Earliest

Place the following developments in microbiology in order from earliest to the most recent. 1: Koch presented the germ theory of disease.  , 2: Leeuwenhoek developed the microscope.  , 3: Fleming identified and developed penicillin.  , 4: Semmelweis utilized hand washing as an antiseptic procedure.

A) 3, 2, 4, 1
B) 2, 1, 3, 4
C) 4, 2, 1, 3
D) 3, 1, 4, 2
E) 4, 1, 2, 3