The 'symptomless' period or latent period in case of syphilis may last for

Match the sexually transmitted diseases in Column-$I$ with their causative agents in Column-$II$ and select the correct option.

Column-$I$	Column-$II$
$A$. Gonorrhoea	$1$. $HIV$
$B$. Syphilis	$2$. $Neisseria$
$C$. Genital herpes	$3$. $Treponema$
$D$. $AIDS$	$4$. $Herpes$ $simplex$ $virus$

Which of the following are all sexually transmitted diseases?

Select the correct option for the early symptoms of Sexually Transmitted Diseases (STDs).
$I -$ Itching in the genital area
$II -$ Abortion
$III -$ Fluid discharge in the genital area
$IV -$ Pelvic Inflammatory Diseases $(PID)$
$V -$ Slight pain in the genital area
$VI -$ Swelling in the genital area

Which of the following sexually transmitted infections is not considered completely curable?

Which one of the following common sexually transmitted diseases is completely curable when detected early and treated properly?