In addition to respiratory support, how is Acute Respiratory Distress Syndrome (ARDS) diagnosed, stabilized immediately, and definitely treated?

A) Diagnosis: Chest X-ray and CT scan, Stabilization: Administration of intravenous fluids, Treatment: Antibiotics
B) Diagnosis: Arterial blood gas analysis, Stabilization: High-flow oxygen therapy, Treatment: Corticosteroids
C) Diagnosis: Pulmonary function tests, Stabilization: Non-invasive positive pressure ventilation, Treatment: Antiviral medications
D) Diagnosis: Clinical examination and history, Stabilization: Endotracheal intubation and mechanical ventilation, Treatment: Addressing underlying cause and supportive care