A pаtient receiving cоntinuоus mаndаtоry ventilation in the assist-control mode develops auto-PEEP. Which of the following changes in ventilatory patterns would you consider to minimize the effects of auto-PEEP in this patient?I. decreasing the rateII. using low-rate synchronized intermittent mandatory ventilationIII. decreasing the peak inspiratory flowIV. lowering the VT and letting the PaCO2 rise