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
T. pallidum was discovered by - 
Select and explain. 
A. Schaudinn and Hoffmann, B. Ellerman and Bang, C. Two, D. Robe koch
A: Schaudinn and Hoffmann
Answer: A: Schaudinn and Hoffmann 
Explanation: Ans. is 'a' i.e., Schaudinn and Hoffmann