1. If: IRV (inspiratory reserve volume) = 2,000 ml, ERV (expiratory reserve volume) = 1,000 ml, TV (tidal volume) = 500 ml and RV (residual volume) = 100ml, which of the following represent the correct VC (vital capacity)?
A. 3,600 ml
B. 3,000 ml
c. 3,500 ml
D. 600 ml