When you travel to the 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 evidence for the Himalayas being young fold mountains?
1. 1 and 2 only
2. 1, 2 and 4 only
3. 3 and 4 only
4. 1, 2, 3 and 4