Given that:
i. `C(s) + O_(2)(g) rarr CO_(2)(g) , DeltaH =- 94.05 kcal`
ii. `H_(2)(g) +(1)/(2) O_(2)(g) rarr H_(2)O(l), DeltaH =- 68.32 kcal`
iii. `C_(2)H_(2)(g) +(5)/(2) O_(2)(g) rarr 2CO_(2)(g) +H_(2)O(l),DeltaH =- 310.62 kcal`
The heat of formation fo acetylene is
A. `-1802 kJ`
B. `+1802 kJ`
C. `-800 kJ`
D. `+228 kJ`