One Standard Atmosphere of Pressure (1 Atm)is Equivalent to What

One standard atmosphere of pressure (1 atm) is equivalent to what pressure expressed in units of mm Hg?

A) 14.7 mm Hg
B) 380 mm Hg
C) 760 mm Hg
D) 0.333 mm Hg
E) 30 mm Hg