The table presents the percentage share of GDP belonging to the richest $20\%$ and the poorest $20\%$ of the population in each country. Which country showed the widest gap between income and poverty?
- AGhana (richest $20\%$: $41.7\%$, poorest $20\%$: $8.4\%$)
- BNigeria (richest $20\%$: $55.7\%$, poorest $20\%$: $4.4\%$)
- CSenegal (richest $20\%$: $48.2\%$, poorest $20\%$: $6.4\%$)
- DSouth Africa (richest $20\%$: $64.8\%$, poorest $20\%$: $2.9\%$)