World war I started after the assassination of archeduke Franz Ferdinand of Austria on...? Mcqs

World war I started after the assassination of archeduke Franz Ferdinand of Austria on...?

(A) 11 September 1913

(B) 28 July 1914

(C) 14 June 1915

(D) 11 November 1918

Source: This question is taken from the Punjab Police Junior Clerk BS-11 PPSC Past Paper