The Gini Coefficient Is

The Gini coefficient is

A) the most common way of representing the income distribution graphically.
B) a commonly used measure of the degree of inequality in an income distribution.
C) a commonly used measure of the degree of inequity in a property distribution.
D) the ratio of the percentage of total income received by the top 20% of families to the percentage of total income received by the bottom 20% of families.