When 228 G of Octane (Molar Mass = 114 $\degree$ CThe Heat Capacity of the Calorimeter Is 5

When 2.28 g of octane (molar mass = 114.23 g/mol) reacts with excess oxygen in a constant volume calorimeter, the temperature of the calorimeter increases by 20.0 $\degree$ C.The heat capacity of the calorimeter is 5.09 kJ/ $\degree$ C.Determine the energy flow, q_rxn, per mole of octane.

A) (-2 kJ)
B) (+5090 kJ)
C) (-102 kJ)
D) (-5090 kJ)
E) (-2.03 kJ)