Given below are two statements, one is labeled as Assertion (A) and the other as Reason (R).Assertion (A): Sustainable development is important for well being of human society.Reason (R): Sustainable development is a kind of development that meets the needs of the present without compromising the ability of future generations to meet their own needs.Select the correct answer from the codes given below :

• 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