If the Pressure in a Gas Container That Is Connected

Multiple Choice

If the pressure in a gas container that is connected to an open-end U-tube manometer is 126 kPa and the pressure of the atmosphere at the open end of the tube is 732 mm Hg,the level of mercury in the tube will

A) be 213 mm higher in the arm open to the atmosphere.
B) be 213 mm higher in the arm connected to the gas cylinder.
C) be 945 mm higher in the arm open to the atmosphere.
D) be 945 mm higher in the arm connected to the gas cylinder.