Assertion (A) Artificial sanitizers can form more foam in hard water. Reason (R) Synthetic sanitizers form soluble salts of calcium and magnesium with hard water.

• A. Both A and R are correct and R is the correct explanation of A
• B. Both A and R are correct but R and R is not the correct explanation of A.
• C. A is right but R is wrong
• D. A is wrong but R is right