In Graph D, which of the following would cause the market curve to shift to the left?
a. a change from Q1 to P2 in Graph C
b. a change from P1 to Q2 in Graph C
c. a change from P1 to P2 in Graph C
d. a change from Q2 to Q1 in Graph C
d. a change from Q2 to Q1 in Graph C
Economics