Problem: A 50-year-old patient with ARDS is receiving mechanical ventilation. The settings are as follows: Mode VC, SIMV FIO2 0.65 Mandatory rate 12 Total rate 14 Delivered VT 500 mL Peak flow 60 L/min PEEP 5 cm H2O Pressure support 7 cm H2O The most recent ABG results follow: pH 7.41 PaCO2 37 mm Hg PaO2 55 mm Hg HCO3- 24 mEq/L BE 0 mEq/L Which of the following should be done? Question options: Switch to pressure control ventilation Switch to VC, A/C with the same settings. Increase the PEEP level to 8 cm H2O Increase the pressure support to 12 cm H2O.