Which of the following is not a taxonomic category?

Which of the following taxonomic categories contains organisms least similar to one another?

Match List-$I$ with List-$II$.

List-$I$	List-$II$
$A$. Family	$I$. Sapindales
$B$. Genus	$II$. Dicotyledonae
$C$. Class	$III$. Anacardiaceae
$D$. Phylum	$IV$. Angiospermae
$E$. Order	$V$. Mangifera

Choose the correct answer from the options given below:

Identify the incorrectly classified group from the following:

As we move from Kingdom to Species in the taxonomic hierarchy,the number of common characteristics among organisms .............

Assertion $(A)$: $A$ taxonomic category composed of a group of related genera is called a family.
Reason $(R)$: The family $Blattidae$ includes various species of pigeons and doves.