Q. Pick out the wrong statement.

• (A) Main constituents of LPG are propane and butane
• (B) C.V. of natural gas is about 10000 kcal/Nm³
• (C) C.V. of LPG is about 26000 kcal/Nm³ (11500 kcal/kg)
• (D) LPG is lighter than air