【单选题】An implication of the Heckscher-Ohlin- theorem is that
A.
if two countries have identical tastes, then no trade will occur between them.
B.
the relative price of a country's scarce factor of production will rise when the country is opened to trade.
C.
income distribution in a country does not change when a country is opened to trade.
D.
two countries with identical tastes can still have a basis for trade if factor endowments of the countries differ and if factor intensities of the commodities differ.