What Alarm(s)is (Are)on the Airon PNeuton Ventilator

What alarm(s) is (are) on the Airon pNeuton ventilator?
1) Low positive end-expiratory pressure/continuous positive airway pressure
2) Patient disconnect
3) High patient pressure
4) Low oxygen inlet pressure

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