Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A): The diploid wild species of potato are self-incompatible due to gametophytic self-incompatibility system.
Reason (R): A dominant self-incompatibility inhibitor gene (Sli) has been identified in the wild species of Solanum chacoense.
In light of the above statements, choose the correct answer from the options given below.