<prompt> Sexually transmitted infection characterized by painful genital ulcers and lymph nodes:SyphilisChancroidHerpesDonovanosis  <response>: Ans. B. ChancroidSexually transmitted infectionsInfectionfeatureIncubation periodGenital ulcerLymphadenopathySyphilis9-90 daysPainless, indurated, SinglePainless, moderateHerpes2-7 daysMultiple, painfulAbsentModerate swellingChancroid1-14 daysPainful, soft, singlemultiplePainful, soft, singlemultiple marked swelling BuboLGV3 days-6 weeksPainlessPainfulDonovanosis1-4 weeks mat be up to 6 monthsPainless beefy red ulcerAbsentsubcutaneous swelling may look like pseudo bubo 