The correct option is C Work done on the gas is 480 J.
For an adiabatic process,
P1Vγ1 = P2Vγ2
[P=Pressure and V=Volume]
Work done in adiabatic process is
So, work done on the gas is 480 J
Also, heat transferred in adiabatic process is always zero.
Hence, options (a), (b), (c) are correct.