Question

An economy is hit by a cost-push shock due to a sharp rise in input prices, resulting in higher inflation and rising unemployment in the short run. How does this affect the short run Phillips Curve?

A It shifts rightward, indicating a deterioration in the inflation–unemployment trade-off
B It shifts leftward, reflecting lower inflation at each level of unemployment
C It remains unchanged as the shock affects only output
D The economy moves downward along the existing curve
E The curve becomes vertical immediately
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