Given below are two statements. One is labelled Assertion (A) and the other is labelled Reason (R). 

Assertion (A) : Potato (Solanum tuberosum) and brinjal (Solanum melongena) are more closely related than potato and Datura.
Reason (R) : Species of the same genus are more closely related than species of different genera.

In light of the above statements, choose the correct answer from the options given below.

The assertion and reason provided are both correct.

In this case, both potato and brinjal belong to the same genus, Solanum, which means they are more closely related to each other than they are to species from a different genus, such as Datura. The hierarchical classification system of taxonomy suggests that organisms are grouped into increasingly broader categories, with species being the most specific and genus being a step higher. Therefore, species within the same genus are expected to be more closely related than species from different genera.