What Was the Significance of Harvard University 'S June, 1947

What was the significance of Harvard University 's June, 1947 commencement speech given by then Secretary of State, George Marshall?

A) It proposed greatly expanded involvement in international trade by the United States
B) It suggested a rapid military build up by the U.S. in western Europe
C) It suggested the division of influence in Europe into eastern and western blocks conceding some control to the Soviet Union
D) It proposed a European developed plan for post war reconstruction financially aided by the United