UGC NET History Q70

Question

Given below are two statements, one labelled as Assertion (A) and the other labelled as Reason (R).
Assertion (A): Some of the peasant rebellions in pre-1857 India were participated exclusively by the tribal population whose political autonomy and control over local resources were threatened by the policies of the British rule.
Reason (R): In the late eighteenth and early nineteenth centuries, the revenue reform of the company's government had fundamentally affected and altered the Indian rural society.
In the context of these statements which of the following is correct?