Match the following aspects with the respective metal.

Aspects	Metal
$a$. The metal which reveals a maximum number of oxidation states	$i$. Scandium
$b$. The metal although placed in $3d$ block is considered not as a transition element	$ii$. Copper
$c$. The metal which does not exhibit variable oxidation states	$iii$. Manganese
$d$. The metal which in $+1$ oxidation state in aqueous solution undergoes disproportionation	$iv$. Zinc

Select the correct option.

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