The correct answer is: B. Hari ka Pattan.
The Beas River is a major river in the Indian states of Himachal Pradesh and Punjab. It is one of the five rivers of Punjab, and is the longest tributary of the Indus River. The Beas River originates in the Himalayas, and flows through the states of Himachal Pradesh and Punjab before joining the Indus River in Pakistan.
The Beas River enters the plains at Hari ka Pattan, a town in the Hoshiarpur district of Punjab. Hari ka Pattan is located about 100 kilometers from the city of Chandigarh. The town is a popular tourist destination, and is known for its temples and historical monuments.
The other options are incorrect. Mirthal is a town in the Kurukshetra district of Haryana. Kullu is a town in the Kullu district of Himachal Pradesh. Larji is a village in the Kullu district of Himachal Pradesh.