Directions : For the Assertion (A) and Reason (R) below, choose the correct alternative Assertion(A) : When common salt is kept open, it absorbs moisture from the air. Reason (R) : Common salt contains magnesium chloride.

• Both A and R are true and R is the correct explanation of A.
• Both A and R are true but R is NOT the correct explanation of A.
• A is true but R is false.
• A is false but R is true.