Assertion: In a food chain members of successive higher levels are fewer in number.Reason: Number of organisms at any trophic level depends upon the availability of organisms which serve as food at the lower level.The correct answer is?

• A. Both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
• B. Both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
• C. Assertion is true statement but Reason is false.
• D. Both Assertion and Reason are false statements.