Which of the following best distinguishes a "command economy" from a "market economy?"
A.
A command economy is more efficient than a market economy because decision making is centralized.
B.
There is scarcity in command economies, but not in market economies.
C.
Command economies are less prone to inflation than are market economies.
D.
Production and distribution decisions are made by central planners in a command economy, but not in a market economy.