Distinguish between inspiratory reserve volume (IRV) and inspiratory capacity (IC)?

• A. IRV measures total inspiration starting at the end of a normal expiration while IC measures total inspiration starting at the end of a normal inspiration.
• B. IC includes tidal volume (TV) and IRV; IRV does not include TV.
• C. IC includes both tidal volume (TV) and vital capacity (VC); IRV does not include VC.
• D. IC measures total inspiration starting at the end of forced expiration, while IRV measures total inspiration starting at the peak of tidal volume.