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
Trachoma is caused by which serotype of chlamydia trachomatis ? 
Select and explain. 
A. D to K, B. A, B, C, C. L1 L2 L3, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: Ans. is. D. 'All of the above Diseases caused by C trachomatisSerotype A, B, Ba, C (Biovar TRIC) : Endemic blinding trachoma.Serotype D to K (Biovar TRIG) : Inclusion conjunctivitis, genital chlamydiasis (non gonococcal urethritis & others), infantile pneumonia.Serotype L I, L2, L3 (Biovar LGV) : Lymphogranuloma venerum, hemorrhagic proctitis.