The figure shоws а grаph оf 2 lines lаbeled Supply and Demand in the cоordinate plane with the origin labeled 0. The horizontal axis is labeled Quantity, and the numbers 4, 6, and 8 are evenly spaced along the middle of the axis. The vertical axis is labeled Price, in dollars, and the numbers 4, 6, and 8 are evenly spaced along the middle of the axis, and the number 12 is indicated at the top of the axis. The supply line begins at coordinates 0,0 and moves upward and to the right. It passes through the coordinates 4, 4, 6,6, and 8,8 and continues a short distance upward and to the right and ends. The demand line begins at coordinates 0,12 and moves downward and to the right. It passes through the coordinates 4,8, 6,6, and 8,4 and downward and to the right and ends slightly above the horizontal axis to the right of 8. The two lines intersect at coordinates 6,6. Apples are produced in a perfectly competitive market with no government intervention. Which of the following price changes will cause the total economic surplus to increase for the apple market depicted in the graph provided?