Pick out the wrong statement.

A. Loamy soil is the best soil for vigorous plant growth, while the clayey soil is solid and hence the plant roots penetrate with difficulty

B. Large excess use of nitrogenous fertiliser in land causes the problem of diarrhoea and cyanosis

C. Application of large excess of potassic fertiliser in soil increases the valuable carotene in fruits and vegetables

D. Cereal crops grown on alkaline soil absorb higher amount of flourides thereby spreading flourosis

Answer: Option C