One mole of \[{{O}_{2}}\] gas having a volume equal to 22.4 litres at \[{{0}^{o}}C\] and 1 atmospheric pressure in compressed isothermally so that its volume reduces to 11.2 litres. The work done in this process is [MP PET 1993; BVP 2003]

• A.            \[1672.5\ J\]                         
• B.            1728 J
• C.            \[-1728J\]                              
• D.            \[-1572.5\ J\]