One mole of an ideal gas at an initial temperature of T K does 6 R joules of work adiabatically. If the ratio of specific heats of this gas at consta pressure and at constant volume is $\frac {5} {3}$, the final temperature of gas will be :-

Question

( A ) (T + 4)K
( B ) (T + 2.4)K
( C ) (T –2.4) K
( D ) (T – 4) K