Which is the ‘Black September Day’ in Olympic history______________________?

A. 1-Sep-72
B. September 5, 1972 (at the Munich Germany Olympics)
C. 1-Sep-84
D. 5-Sep-84

The correct answer to the question: "Which is the ‘Black September Day’ in Olympic history______________________?" is "September 5, 1972 (at the Munich Germany Olympics)".