The correct answer is D. 1 and 2.
The Kalka-Shimla Railway is a narrow-gauge railway in India. It is a UNESCO World Heritage Site. The railway passes through the Himalayas and is one of the most scenic railways in the world. It has 103 tunnels and 91 bridges. The railway was built between 1891 and 1903. It was built by the British government. The railway was completed after India gained independence in 1947.
Statement 1 is correct. The Kalka-Shimla Railway passes through 103 tunnels.
Statement 2 is also correct. The Kalka-Shimla Railway crosses 20 railway stations in its journey.
Statement 3 is not correct. The construction of the Kalka-Shimla Railway started before independence and was completed after independence.