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: Pathology
Gray hepatization of lungs is seen on day: 
Select and explain. 
A. 1, B. 3-Feb, C. 5-Mar, D. 7-May
C: 5-Mar
Answer: C: 5-Mar 
Explanation: 5-Mar