This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteriology, Subject name: Microbiology
Syphilis was first identified by 
Select and explain. 
A. Fraenkel, B. Nicolaescu, C. Schaudinn and Hoffman, D. Ogston
C: Schaudinn and Hoffman
Answer: C: Schaudinn and Hoffman 
Explanation: Treponema pallidum is the causative agent of syphilis, was first discovered by Schaudinn and Hoffmann in the chancers and inguinal lymph nodes of syphilitic patients. Ref: Textbook of microbiology; Ananthanarayan and paniker's; 10th edition; Pg: 378