While Assessing a Patient on a Home Mechanical Ventilator, the Low

While assessing a patient on a home mechanical ventilator, the low pressure alarm sounds. Your immediate action would be to:

A) start positive pressure ventilation with high-concentration oxygen.
B) increase the rate of ventilation on the ventilator.
C) check the ventilator tubing for kinking or obstruction.
D) check the connection between the tubing and tracheostomy.