Which of the following $STD$ and its causative agent is not correctly matched?

$STDs$ (Sexually Transmitted Diseases) can lead to several long-term complications. Which of the following are considered later complications of $STDs$?
$I$. Pelvic inflammatory disease
$II$. Abortion
$III$. Stillbirth
$IV$. Ectopic pregnancies
$V$. Infertility
$VI$. Cancer
Choose the correct combination:

Which one of the following statements is correct regarding sexually transmitted diseases $(STDs)$?

Common $STD$ in India is

Which of the following principles are used to prevent $STD$ infection?
$(i)$ Avoid sex with unknown partners
$(ii)$ Use condoms during coitus
$(iii)$ Blood transfusion
$(iv)$ All of these

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