As a result of air at the top of a barometer, the height of the mercury column is 73.5 cm when it should be 75.0 cm; the volume of the space above the mercury is 8.0cm³. Calculate the correct barometric height when the barometer reads 74.0 cm and the volume of the space above the mercury is 6.0 cm³.

• A.72.0 cm
• B.74.5 cm
• C.75.1 cm
• D.76.0 cm