'Syphilis' is a sexually transmitted disease caused by

Which of the following are all sexually transmitted diseases?

Which of the following sexually transmitted diseases is not completely curable?

Match the following sexually transmitted diseases (column $I$) with their causative agent (column $II$) and select the correct option.

Column-$I$	Column-$II$
$A$. Gonorrhoea	$i$. $HIV$
$B$. Syphilis	$ii$. Neisseria
$C$. Genital warts	$iii$. Treponema
$D$. $AIDS$	$iv$. Human papilloma virus

Which pathogen causes genital warts,a type of $STD$ in humans?

Syphilis is an infectious bacterial disease caused by $Treponema\ pallidum$ with $3$ stages:
$(A)$ Infectious painless ulcers on the genitals $\quad(i)$ First
$(B)$ Blindness, heart trouble, aortic impairment $\quad(ii)$ Second
$(C)$ Skin lesions, hair loss, swollen joints $\quad(iii)$ Third
Which of the following is the correct match between the symptoms and stage?