Match the types of niche in Column-$I$ with their description in Column-$II$.

$i$. Habitat niche	$a$. In the absence of competition in the habitat
$ii$. Trophic niche	$b$. Position of organism in the environmental gradient
$iii$. Multidimensional niche	$c$. Physical space occupied by an organism
$iv$. Fundamental niche	$d$. Level of organism in the food chain

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