Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : Gradient of the road affects the sight distance.
Reason R : While climbing up a gradient, the vehicle can stop immediately: whereas. while descending a gradient, gravity also comes into action and more time will be required to stop the vehicle.
In the light of the above statements. choose the most appropriate answer from the options given below :