Which Statement Should the Nurse Make When There Is a Balance

Which statement should the nurse make when there is a balance between outward recoil of the chest wall and inward recoil of lungs at rest?

A) Functional residual capacity (FRC) is reached.
B) Vital capacity (VC) is reached.
C) Total lung capacity (TLC) is reached.
D) Residual volume (RV) is reached.