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