BIncrease in production costs such as wages and raw materials
CExcess money supply in the economy
DGovernment subsidies on essential goods
Step-by-Step Solution
Step 1: Understand cost-push inflation
Cost-push inflation arises when production costs increase, leading producers to raise prices.
Step 2: Analyze options
Only the increase in production costs such as wages and raw materials fits the cause of cost-push inflation. Other options relate to demand or policy effects.
Final Answer:
Increase in production costs such as wages and raw materials → Option B