$(\Delta H - \Delta U)$ for the formation of carbon monoxide (CO) from its elements at 298 K is : <br> $(R = 8.314 \; JK^{-1} mol^{-1})$

Question

( A ) $1238.78\; J\; mol^{-1}$
( B ) $-1238.78\; J\; mol^{-1}$
( C ) $2477.57\; J\; mol^{-1}$
( D ) $-2477.57\; J\; mol^{-1}$