Given below are two statements, one is labelled as Assertion (A) and the other is labelled as Reason (R):
Assertion (A): Archaeopteryx lithographica demonstrates phylogenetic relatedness between birds and reptiles.
Reason (R) : Archaeopteryx lithographica was approximately the size of a crow with imprints of feathers, possessed beak-like jaws with small bony teeth set in sockets and a reptilian skeleton with a long bony tail.
In the light of the above statements, choose the most appropriate answer from the options given below