A Law in the U

A law in the U.S. prohibits the export of natural gas unless such exports are in the "public interest." What does "public interest" mean in the context of that law?

A) The amount received for the exported natural gas is enough to cover the production and transportation costs plus a reasonable profit
B) The U.S.government is able to collect export taxes set by law on the exported natural gas
C) The exports leave an adequate supply of natural gas for domestic users and consumers of natural gas
D) The exported natural gas does not fall into the hands of groups or countries that the U.S.government has designated as terrorists