A Patient Has a Vital Capacity of 4200 Ml, a Functional

Multiple Choice

A patient has a vital capacity of 4200 ml, a functional residual capacity (FRC) of 3300 ml, and an expiratory reserve volume (ERV) of 1500 ml. What is the residual volume (RV) ?

A) 5700 ml
B) 2700 ml
C) 1800 ml
D) 7500 ml