What is required for the formation of a Genus?

In the scientific name of $Mangifera$ $indica$ $L$.

What is the order of mango $(Mangifera \text{ } indica)$?

Assertion $-A$: Carolus Linnaeus is known as the father of taxonomy.
Reason $-R$: The classification system proposed by him is still accepted today after some modifications.

Assertion $(A)$: Linnaeus is known as the father of taxonomy.
Reason $(R)$: Linnaeus developed the binomial nomenclature system for the scientific naming of organisms.
Which option is correct for Assertion $(A)$ and Reason $(R)$?

What is the taxonomic category formed by a group of related genera?