Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R:
Assertion A: Ontological concepts are totally different from metaphysical concepts.
Reason R: Ontological concepts deal with actual existential beings, where as metaphysical concept deals with both existential and non-existential Realities.
In the light of the above statements, choose the most appropriate answer from the options given below: