Please refer to the following graph describing the market for basketballs. Assume that curves labeled D1 and $1 are "before" curves and D2 and $2 are "after" curves. Which of the following best summarizes the changes that have occurred in this market? S2 S1 $9 Price $8 $7 $6 $5 $4 $3 $2 $1 2 3 4 Quantity O Equilibrium price has increased and equilibrium quantity has increased. O Equilibrium price has increased and equilibrium quantity has decreased. O Equilibrium price has decreased and equilibrium quantity has increased. O Equilibrium price has decreased and equilibrium quantity has decreased