The Compound Carbon Suboxide, C₃O₂, Is a Gas at Room $\Delta$

The compound carbon suboxide, C₃O₂, is a gas at room temperature. Use the data supplied to calculate the heat of formation of carbon suboxide. (Data: $\Delta$ H $\degree$ = 127.3 kJ/mol and $\Delta$ H $\degree$ _f of CO(g) = -110.5 kJ/mol)

A) 116.8
B) -93.7
C) 227.8
D) -348.3
E) 93.7