Why is the natural gas kept in minus 260 degrees Fahrenheit？

A.Because natural gas is transformed into liquefied natural gas in such a low temperature, thus 600 times smaller in volume.

B.Because it is safer to be delivered by ship.

C.Because it is economical to be delivered by ship.

D.Because it is convinient to be delivered by ship.

正确答案：Because natural gas is transformed into liquefied natural gas in such a low temperature, thus 600 times smaller in volume.#Because it is safer to be delivered by ship.#Because it is economical to be delivered by ship.#Because it is convinient to be delivered by ship.