Pick out the wrong statement.

A. A slight haze at the top of chimney indicates good combustion in the furnace

B. A bag filter incurs very small pressure drop and is very efficient for removal of sub-micronic dust particles from flue gases at very high temperature

C. Electrostatic precipitator is the most efficient dust collection equipment for removal of sub-micronic dust particles present in flue gas

D. None of these

Answer: Option B