The correct options are
A Sikkim
B Arunachal Pradesh
C Himachal Pradesh
Starting from the Indus river in the west, the Himalayas pass through Jammu and Kashmir, Himachal Pradesh and Uttarakhand.They also run through Nepal and Bhutan, passing through the Indian state of Sikkim. The Himalayas end at the Brahmaputra river in the east, covering much of Arunachal Pradesh.