In Spite of Limited Free Market Reforms, Which Country Remains

In spite of limited free market reforms, which country remains essentially a communist system?

A) Cuba, as shown by the heavy taxes on the expected earnings, not actual sales, of private enterprises
B) Cuba, as shown by the legalization of the U.S. dollar to earn foreign exchange
C) Russia, as shown by the allowance of supply and demand to set higher prices for basic consumer goods
D) Russia, as shown by the streets choked with foreign cars