What is the absolute pressure of the gas above the liquid surface in the tank shown in fig. Density of \[oil=820kg/{{m}^{3}}\], density of mercury\[=13.6\times {{10}^{3}}kg/{{m}^{3}}\] Given 1 atmospheric pressure\[=1.01\times {{10}^{5}}N/{{m}^{2}}\]

• A. \[3.81\times {{10}^{5}}N/{{m}^{2}}\]
• B. \[6\times {{10}^{6}}N/{{m}^{2}}\]
• C. \[5\times {{10}^{7}}N/{{m}^{2}}\]
• D. \[4.6\times {{10}^{2}}N/{{m}^{2}}\]