Match forensic science pioneers with their fields.
A. Calvin Goddard: Father of modern forensic ballistics; pioneered the comparison microscope for firearm identification. Therefore, A - II.
B. Karl Landsteiner: Discovered the ABO blood groups in 1901, fundamental to blood grouping and transfusion medicine. Thus, B - III.
C. Albert S. Osborn: Pioneer in questioned document examination in North America; author of "Questioned Documents." Hence, C - IV.
D. Mathieu Orfila: Father of modern toxicology; first to use microscopy for blood and semen stains; significant contributions to poison study. Therefore, D - I.
The matches are: A-II, B-III, C-IV, D-I.