A sample of exhaled air from a resting human contains mostly four gases. The partial pressures for each of the four gases are listed: nitrogen (563 mm Hg), oxygen (118 mm Hg), carbon dioxide (30.0 mm Hg), and water
(50.0 mm Hg). Calculate the total pressure of the exhaled gas.
O A. 365 mm Hg
OB. 711 mm Hg
OC. 731 mm Hg
OD. 761 mm Hg