Which of the Following Disagrees with the Concept of Centrally

Which of the following disagrees with the concept of centrally planned economies?

A) At the time of their collapse,standards of living in most centrally planned economies were at or above those of market economies.
B) Basic necessities were often not provided to citizens in centrally planned economies.
C) Underground economies for goods and services thrived in most centrally planned economies.
D) Prices on the black market were much higher than the official prices set by governments.