Which sentence below uses proper capitalization?


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


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


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


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

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