A. Soil corrosion
B. Oxidation corrosion
C. Pitting corrosion
D. Water line corrosion
The question was asked by my college professor while I was bunking the class.
Query is from Types of Corrosion and Passivity topic in section Electro Chemical Cells and Corrosion of Applied Chemistry
Explanation: Corrosion due to the difference in water level is water line corrosion. Corrosion due to the formation of varying concentrations of the aeration.