In His Haussmannization of Paris,why Did Baron Georges-Eugène Haussmann Widen

In his Haussmannization of Paris,why did Baron Georges-Eugène Haussmann widen Paris's streets?

A) To enable more shops to be built along them
B) To make it harder for mobs to barricade them
C) To allow for more factories to be built in the city
D) To make it more difficult for snipers to aim at people