Which language is used for the nomenclature of living organisms?

Match the following taxonomic categories with their characteristics:

Category	Characteristic
$A$. Species	$i$. Related families
$B$. Genus	$ii$. Related genera
$C$. Order	$iii$. Organisms capable of interbreeding to produce fertile offspring
$D$. Family	$iv$. Group of species with a common ancestor

Which one of the following criteria is/are essential and form the basis of classical taxonomic studies?

The correct sequence of taxonomic categories is

$A :$ Scientific names for plants have been standardized through $ICBN$.
$R :$ Naming system which uses three-word format was given by Linnaeus.

Which of the following statements is correct regarding a species?