Calculate the standard heat of formation of acetaldehyde, CH3CHO(g), given the following information:?

CH3CHO(g) + 5/2 O2(g) = 2H2O(l) + 2CO2(g) ΔH = -1194 kJ
ΔHfo(H2O,l) = - 286 kJ/mol
ΔHfo(CO2,g) = -394 kJ/mol

A -452 kJ/mol
B -332 kJ/mol
C -166 kJ/mol
D 166 kJ/mol
E 332 kJ/mol