What Does It Mean If a Country Is "Energy Independent

What does it mean if a country is "energy independent"?

A) A country can pay to have all of its energy imported from other countries without having to borrow money.
B) A country uses a hybrid plan of energy production and energy imports to provide a stable supply of electricity for its citizens.
C) A country has access to enough reliable and affordable energy resources to meet its needs.
D) A country can meet of all of its energy needs without importing any fuel.