How Should a Volume-Regulated Ventilator for NPPV Be Adjusted to Deliver

How should a volume-regulated ventilator for NPPV be adjusted to deliver the appropriate tidal volume (VT) to a pediatric patient?

A) The preset VT should be equal to the patient's estimated anatomic dead space volume.
B) The delivered VT should be equal to the estimated anatomic dead space divided by the patient's respiratory rate.
C) The VT should be set by dividing the patient's PaCO₂ by two.
D) The delivered VT should be set at twice the child's physiologic VT.