Given below are two statements, one is labelled as Assertion (A) and the other is labelled as Reason (R):
Assertion (A) : The Himalayas are result of tectonic activity along the convergent plate margins.
Reason (R) : In Tertiary period, convergence of Indian Plate with Australian Plate compressed the sediments of Tethys Sea.
In the light of the above statements, choose the most appropriate answer from the options given below: