Regarding Income Distribution, Which of the Following Is True

Regarding income distribution, which of the following is true?

A) The size of the economic pie to be divided among a country's residents is fixed.
B) Government tax and transfer programs have exerted a strong equalizing impact on the distribution of income in the United States.
C) The method of allocating income is relevant to the issue of fairness as well as the pattern of income distribution.
D) The optimal distribution of income can be determined by objective economic criteria.