When you travel in Himalayas, you will see the following
1. Deep gorges
2. U-turn river courses
3. Parallel mountain ranges
4. Steep gradients causing land-sliding
Which of the above can be said to be the evidences for Himalayas being young fold mountains?
(a) 1 and 2 (b) 1, 2 and 4 (c) 3 and 4 (d) 1, 2, 3 and 4