The correct option is A 1869
Britain's major contribution to India's economic development throughout the era of crown rule was the railroad network that spread so swiftly across the subcontinent after 1858, when there were barely 200 miles (320 km) of track in all of India. By 1869 more than 5,000 miles (8,000 km) of steel track had been completed by British railroad companies, and by 1900 there were some 25,000 miles (40,000 km) of rail laid.