Table: Average Income and Distribution of Income Data Provides Data

Table: Average Income and Distribution of Income Data provides data on average income and the distribution of income in four countries.
According to the data in the table, which country has the largest dollar gap between the average income of those in the top and bottom quintiles?
$$\begin{array}{l}\text { Table: Average Income and Distribution of Income Data }\\\begin{array} { | l | l | l | l | l | } \hline & \text { Country A } & \text { Country B } & \text { Country C } & \text { Country D } \\\hline \begin{array} { l } \text { Average household } \\\text { income in the nation }\end{array} & \$ 20,000 & \$ 50,000 & \$ 90,000 & \$ 90,000 \\\hline \begin{array} { l } \text { Percent of total income } \\\text { earned in the top } \\\text { quintile }\end{array} & 60 \% & 40 \% & 40 \% & 60 \% \\\hline \begin{array} { l } \text { Percent of total income } \\\text { earned in the bottom } \\\text { quintile }\end{array} & 5 \% & 12 \% & 12 \% & 5 \% \\\hline\end{array}\end{array}$$

A) country A
B) country B
C) country C
D) country D