The correct answer is A. 1 and 2.
Statement 1 is correct because there are two broad gauge and one narrow gauge railway track in Himachal Pradesh. The broad gauge tracks are the Pathankot-Jogindernagar line and the Una-Hamirpur line. The narrow gauge track is the Kalka-Shimla line.
Statement 2 is also correct because the Kalka-Shimla railway route is a narrow gauge railway. It is a UNESCO World Heritage Site and is one of the most popular tourist destinations in Himachal Pradesh.
Statement 3 is incorrect because the Pathankot-Jogindernagar railway route is not the longest in the state. The longest railway route in Himachal Pradesh is the Una-Hamirpur line.
The following table shows the details of the railway tracks in Himachal Pradesh:
| Track | Gauge | Length (km) |
|—|—|—|
| Pathankot-Jogindernagar | Broad gauge | 164 |
| Una-Hamirpur | Broad gauge | 145 |
| Kalka-Shimla | Narrow gauge | 96.6 |