Which sentence below uses proper capitalization?

A- In 1914, H.G. Wells called the Great War “the War to end all Wars”; now we call it World War I.

B- In 1914, H.G. Wells called the Great War “the war to end all wars”; now we call it World War I.

C- In 1914, H.G. Wells called the great war “the war to end all wars”; now we call it world war I.

D- In 1914, H.g. Wells called the great war “the war to end all wars”; now we call it World War I.