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Read the source and answer the following questions.

The folds of the Great Himalayas are asymmetrical in nature. The core of this part of Himalayas is composed of granite. It is perennially snow bound and a number of glaciers descend from this range. The range lying to the South of the Himadri forms the most rugged mountain system and is known as Himachal or lesser Himalaya. The ranges are mainly composed of highly compressed and altered rocks. The altitude varies between 3,700 and 4,500 metres and the average width is of 50 km. While the Pir Panjal range forms the longest and the most important range, the Dhaula Dhar and the Mahabharat ranges are also prominent ones.

This range consists of the famous valley of Kashmir, the Kangra and Kullu valley in Himachal Pradesh. This region is well-known for its hill stations. The outer-most range of the Himalayas is called the Shiwaliks. They extend over a width of 10-50 km and have an altitude varying between 900 and 1100 metres. These ranges are composed of unconsolidated sediments brought down by rivers from the main Himalayan ranges located farther North. These valleys are covered with thick gravel and alluvium. The longitudinal valley lying between lesser Himalaya and the Shiwaliks are known as Duns. Dehra Dun, Kotii Dun and Path Dun are some 3f the well-known Duns.

Which of the following is the feature of the Great Himalayas?

A) The core of this part of Himalayas is composed of granite.

B) It is perennially snowbound.

C) It has a number of glaciers.

D) All of the above