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
Pneumonia "alba" is due to: 
Select and explain. 
A. Klebsiella, B. Streptococci, C. Treponema pallidum, D. Staphylococci
C: Treponema pallidum
Answer: C: Treponema pallidum 
Explanation: Treponema pallidum