Directions: The following items consist of two statements, one labelled as 'Assertion (A)' and the other labelled as 'Reason (R)'. You are to examine these two statements carefully and decide if the Assertion (A) and the Reason (R) are individually true and if so, whether the reason is a correct explanation of the Assertion. Select your answer to these items using the codes given below. Assertion (A) : Graben a major relief feature resulting from the faulting activities. It is infact, a valley or narrow trough bounded by one or more parallel faults. Reason (R) : Blocks of the Earth's crust may be relatively raised or lowered between more or less parallel faults. The lower part known as grabern is formed due to the subsidence of middle part between two normal faults.