Assertion (A): Hard water gives easy lather with soap.
Reason (R): Salts of calcium and magnesium react with soap to form insoluble salts.
A. (A) and (R) both are correct and (R) is the correct explanation of (A).
B. (A) and (R) both are correct but (R) is not the correct explanation of (A).
C. (A) is correct but (R) is not correct.
D. (A) is not correct but (R) is correct.
