Match the following pairs:

Column $I$ (Type of addiction)	Column $II$ (Organ/system affected)
$i$. Heroin	$a$. Increases neurotransmitter dopamine
$ii$. Marijuana	$b$. Cardiovascular system
$iii$. Cocaine	$c$. Liver cirrhosis
$iv$. Alcohol	$d$. Gastrointestinal tract

Select the correct option from the following.

• A
  $i-d, ii-b, iii-c, iv-a$
• B
  $i-d, ii-b, iii-a, iv-c$
• C
  $i-d, ii-a, iii-c, iv-b$
• D
  $i-d, ii-a, iii-b, iv-c$