The correct option is A Khyber Pass
Punjab is a northwestern state in India. It is borderd by Jammu and Kashmir, Haryana, Rajasthan and Himachal Pradesh. Medieval Punjab provided an entrance to Invaders, Traders, Scholars and Merchants. The Khyber pass and Bolan pass served an entrance to Persians, Greeks, Kushans, Ghaznavids, Timurids, Pashtuns and Mughals.