Assertion (A) Synthetic detergents can lather well in hard water.
Reason (R) Synthetic detergents form soluble calcium and magnesium salts with hard water.

A. Both A and R are true and R is the correct explanation of A

B. Both A and R are true, but R is not the correct explanation of A

C. A is true, but R is false

D. A is false, but R is true

Answer: Option A