Your patient has a peak of 28 cmH₂O and a plateau pressure of 22 cmH₂O, with a total flow of 40 LPM. What is the resistance?

A) 1.5 cmH₂O/LPM
B) 2.0 cmH₂O/LPM
C) 1.0 cmH₂O/LPM
D) 2.5 cmH₂O/LPM