Long-run costs and economies of scale — practice question

Within an economy, both wages and prices are increasing, but wages are increasing more quickly. Which characteristics are likely to be present in this economy?

• Acost-push inflation: no / rise in real incomes: no
• Bcost-push inflation: no / rise in real incomes: yes
• Ccost-push inflation: yes / rise in real incomes: no
• Dcost-push inflation: yes / rise in real incomes: yes