The Siachen Glacier is a glacier located in the eastern Karakoram range in the Himalayas at about 35.421226°N 77.109540°E, just northeast of the point NJ9842 where the Line of Control between India and Pakistan ends.
At 76 km (47 mi) long, it is the longest glacier in the Karakoram and second-longest in the world's non-polar areas.
Siachen Glacier lies to the north of the valley. Hence Option D. is correct.
The Sasser Pass and the famous Karakoram Pass lie to the northwest of the valley and connect Nubra with Uyghur.