The on$-$going demolition of the old Champlain Bridge which started recently in Montreal, will cost $ $400$ million and last from three to four years and the on$-$going construction of the TransCanada Keystone XL pipeline bringing $830,000$ barrels of crude oil per day from Alberta to the U$.$S$.$ Midwest and the Gulf Coast are classified, respectively, as: A$.$ Bridge and Oil$/$Gas project, respectively. B$.$ Infrastructure and industrial project, respectively. C$.$ Heavy engineering and Industrial project, respectively. D$.$ Both are infrastructure projects.