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 individually true and R is the correct explanation of A

(b)

Both A and R are individually true but R is not a correct explanation of A

(c)

A is true but R is false

(d)

A is false but R is true