Partial Ventilatory Support Can Be Provided by Which of the Following

Multiple Choice

Partial ventilatory support can be provided by which of the following ventilator modes?
1) Pressure-controlled continuous mandatory ventilation (PC-CMV) set rate 8 breaths/min
2) Volume-controlled intermittent mandatory ventilation (VC-IMV) set rate 4 breaths/min
3) Pressure-controlled intermittent mandatory ventilation (PC-IMV) set rate 10 breaths/min
4) VC-MMV set Ve8 L/min

A) 1 and 2 only
B) 2 and 3 only
C) 2 and 4 only
D) 3 and 4 only