This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
A patient in ICU and on ventilator develops cough with fever. The gram-staining on microscopy will show: 
Select and explain. 
A. Gram negative cocci, B. Gram negative bacilli, C. Gram positive bacilli, D. Gram variable organism
B: Gram negative bacilli
Answer: B: Gram negative bacilli 
Explanation: Ans. is. 'b' i. e., Gram negative bacilli