This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Modes of Ventilation, Subject name: Anaesthesia
The most common pathogen in ventilation associated pneumonia: 
Select and explain. 
A. Staphylococcus Aureus, B. Pseudomonas, C. Enterococci, D. Streptococcus
B: Pseudomonas
Answer: B: Pseudomonas 
Explanation: Two most common pathogen FOR ventilator Asssociated Pneumonia - (1) Staph Aureus (2) Pseudomonas Aeruginosa Pseudomonas Aeruginosa is more common among two.