For the formation of carbon monoxide (CO) from the elements at 298 K $(\Delta H - \Delta U)$ is (R=8.314 $JK^{-1}mol^{-1}$)

Question

(a) -2477.57 J/mol
(b) 2477.57 J/mol
(c) -1238.78 J/mol
(d) 1238.78 J/mol