Assertion (A) Tidal volume is the volume of air inspired or expired with the normal breath. Reason (R) Adult person contains 500 mL expired or inspired volumes of air with each normal breath.

• A. If both Assertion and Reason are true and Reason is correct explanation of Assertion
• B. If both Assertion and Reason are true but Reason is not the correct explanation of Assertion
• C. If Assertion is true but Reason is false
• D. If both Assertion and Reason and false.