The heat of combustion of ethanol was determined in a bomb calorimeter and was found to be `-670.48kcal mol^(-1)` at `25^(@)C`. What will be `DeltaU` for the same reaction at `298K` ?
A. `-2802.6kJ`
B. `-669.28cal`
C. `-670.48kcal`
D. `-280.26xx10^(4)kJ`