Refer to the Above Diagram, Which Shows Three Supply Curves

Multiple Choice

Refer to the above diagram, which shows three supply curves for corn.Which of the following would cause the change in the supply of corn illustrated by the shift from S₁ to S₃?

A) a decrease in the price of fertilizer
B) an increase in the price of irrigation equipment
C) an increase in consumer incomes
D) a change in consumer tastes in favour of cornbread