Reference: Ref 4-8 (Figure: Demand, Supply Shifts) in the Figure

Reference: Ref 4-8 (Figure: Demand, Supply Shifts) In the figure, the initial demand curve is D1 and the initial supply curve is S1. Resource prices in this market increase; at the same time, the consumer population declines as migration causes an outflow of population to other regions. What happens to the supply curve and/or demand curve?

A) S1 shifts to S2 but then shifts back to S1. D1 remains at D1.
B) S1 shifts to S3 and D1 shifts to D2.
C) S1 shifts to S2 and D1 shifts to D3.
D) S1 shifts to S2 and D1 shifts to D2.