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
Necrotizing granulomatous inguinal lymphadenopathy is caused by 
Select and explain. 
A. Syphilis, B. Granuloma inguinale, C. Sarcoidosis, D. Tuberculosis
A: Syphilis
Answer: A: Syphilis 
Explanation: Primary syphilis - the regional lymph nodes are swollen, discrete, non-tender and rubbery. Ref: Baveja textbook of microbiology; 4th edition.