For a Country to Specialize Completely in One Product,it Must

For a country to specialize completely in one product,it must be assumed that

A) the country consumes all the production.
B) the cost of producing the product (in terms of other goods foregone) is constant.
C) the country has an absolute advantage in the production of that good.
D) sufficient technical information is available to indicate a comparative advantage in that good.
E) the country in question has a capitalistic system.