A Humidifier Used with a Mechanical Ventilator Should Deliver a Minimum

A humidifier used with a mechanical ventilator should deliver a minimum of how much humidity?

A) 10 mg H₂O/L at 35° C to 37° C
B) 20 mg H₂O/L at 31° C to 35° C
C) 30 mg H₂O/L at 31° C to 35° C
D) 47 mg H₂O/L at 35° C to 37° C