The primary difference between absolute and comparative advantage is

A$.$ absolute advantage refers to the ability to produce a good or service at a lower opportunity cost and comparative advantage refers to the ability to produce more of a good or service using the same amount of resources.

B$.$ absolute advantage refers to the ability to produce more of a good or service using the same amount of resources and comparative advantage refers to the ability to produce a good or service at a lower opportunity cost.

C$.$ absolute advantage is a concept that was utilized in communist countries and comparative advantage is a capitalist idea.

D$.$ absolute advantage can never change while comparative advantage depends on the relative cost of a good's resources.