What Was Erwin Schroedinger's Main Contribution to the Development of Quantum

Multiple Choice

What was Erwin Schroedinger's main contribution to the development of quantum theory?

A) He discovered the nonlocality principle.
B) He found a way to predict the overall statistical patterns that appear in the double- slit experiment with electrons and other experiments.
C) He found a way to predict the precises position at which electrons or other particles will strike the viewing screen in such experiments as the electron double- slit experiment.
D) He explained the photoelectric effect, in terms of photons.
E) He discovered the uncertainty principle.