Answer:
B. DeMarcus earns $350 per week, and his weekly costs are $300.
Explanation:
What is a living wage?
The minimum income necessary for a worker to meet their cost-of-living expenses and to provide some discretionary income.
Therefore, a person earns a living wage if their earnings are greater than their weekly costs.
The only person who earns more than their weekly costs is DeMarcus.
Since DeMarcus earns $350 per week and his weekly costs are $300, his income is enough to meet his basic needs with $50 left over.