Granuloma inguinale is caused by: (A) H. ducreyi, (B) Chlamydia trachomatis, (C) Treponema pallidum, (D) Calymmatobacterium
Answer is D. Granuloma venereum (granuloma inguinale) → caused by Calymmatobacterium granulomatosis.
Lymphogranuloma venereum (lymphogranuloma inguinale) →  Caused by chlamydia trachomatis (serotypes L1, L2, L3).