<prompt>  A 28 year old sexually active male presents with burning micturation. On clinical examination no ulcer in the genitals. Urine examination shows 50 WBCsHPF, no RBCs, leucocyte esterase positive, gonococcal culture negative. What could be the most probable causative organism ?Treponema pallidumNeisseriaChlamydia trachomatisH. ducreyi 