A thin tube of uniform cross section is sealed at both ends. It lies horizontally, the middle `5cm` containing mercury and the parts on its two sides containing air at the same pressure `p`. When the tube is held at and angle of `60^(@)` with the vertical, the length of the air column above and below the mercury pellet are `46cm` and `44.5cm` respectively. Calculate the pressure in centimeters of mercury, The temperature of the system is kept at `30^(@)C`.

Options

A. 75.4 cm
B. 57.4 cm
C. 70.4 cm
D. 44.5 cm