Q. Pick out the wrong statement.

• (A) Adiabatic flame temperatures of actual combustions are always less than the maximum values
• (B) Burning the fuel with excess pure oxygen results in maximum theoretical flame temperature
• (C) Burning the fuel with theoretically required amount of pure oxygen results in attainment of maximum adiabatic flame temperature
• (D) Theoretical flame temperature is the temperature attained by the products of combustion, when the fuel is burned without loss or gain of heat