Use the Figure a Change in the Supply Curve

Use the figure A Change in the Supply Curve. What caused the change shown in this graph?
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Figure: A Change in the Supply Curve

A) The price of a substitute in production increased.
B) The price of an input used to produce this good increased.
C) Sellers expect to get a lower price in the future.
D) Sellers are getting a lower price for a complement in production.