Which of the following is transported through 'Big Inch' pipeline?

Petroleum

In U.S.A. there is a dense network of oil pipelines from the producing areas to the consuming areas. Big Inch is one such famous pipeline, which carries petroleum from the oil wells of the Gulf of Mexico to the North-eastern States. About 17 per cent of all freight per tonne-km. is carried through pipelines in U.S.A.