An Unconscious Patient Aspirated Gastric Contents

An unconscious patient aspirated gastric contents. Which of the following anaerobic microorganisms would likely now be found in her lower respiratory tract?
1) Legionella pneumophila
2) Pseudomonas aeruginosa
3) Peptococci
4) Bacteroides fragilis

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