Coal is used as a source of energy in many manufacturing processes. Assume a long strike by coal miners reduced the supply of coal and increased the price of coal. This would cause
A. the short-run aggregate supply curve to become flatter.
B. the short-run aggregate supply curve to shift to the right.
C. the short-run aggregate supply curve to shift to the left.
D. the short-run aggregate supply curve to become nearly vertical at all levels of output.
Answer: C
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Answer the following statement true (T) or false (F)