Assertion (A) : After carbon, nitrogen is the most abundant element in the biosphere.Reason (R) : Nitrogen is essential for synthesizing the living matter in nature.Code

• 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 the correct explanation of (A)
• C. (A) is true but (R) is false
• D. (A) is false but (R) is true