Figure 4-11 -Refer to Figure 4-11.The Movement from Point a to Point

Figure 4-11
-Refer to Figure 4-11.The movement from point A to point B on the graph represents

A) an increased willingness and ability on the part of suppliers to supply the good at each possible price.
B) an increase in the number of suppliers.
C) a decrease in the price of a relevant input.
D) an increase in the price of the good that is being supplied and the suppliers' responses to that price change.