Calculate the enthalpy change (△H) of the following reaction

2C₂H₂(g) + 5O₂(g) → 4CO₂(g) + 2H₂O(g)

given average bond enthalpies of various bonds, i.e., C−H,C≡C,O=O,C=O,O−H as 414, 814 499, 724 and 640 kJ mol⁻¹ respectively.

A. −2600 kJ mol⁻¹
B. +2573 kJ mol⁻¹
C. −2573 kJ mol⁻¹
D. +2600 kJ mol⁻¹