A 30-year-old male patient has a large, spreading and exuberant ulcer with bright red granulation tissue over the glans penis. There was no lymphadenopathy. The most likely causative organism is –
Two important clues in this question are :-


Exuberant granulation tissue → Diagnosis is granuloma venerum
No lymphadenopathy → Diagnosis is granuloma venerum
Treponema pallidum
Herpes simplex virus type 1
Herpes simplex virus type 2
Calymmatobacterium granulomatis