When Using Water Traps to Help Minimize the Problems Caused

When using water traps to help minimize the problems caused by condensation in a heated-humidifier ventilator circuit, where would you place the traps?

A) In the expiratory limb only, at a high point in the circuit.
B) In both the expiratory and inspiratory limbs, at high points in the circuit.
C) In the expiratory limb only, at a low point in the circuit.
D) In both the expiratory and inspiratory limbs, at low points in the circuit.