Detergents are more advantageous than soaps in hard water districts because

A. on treatment with hard water they either form soluble calcium salts or do not react with calcium ion  
B. on treatment with hard water they form soluble calcium salts
C. on treatment with hard water they form sodium salts
D. on treatment with hard water they are converted into soaps
E. on treatment with hard water they form more lather than soaps does

Show Answer Show Explanation

Correct Answer: A