Figure 11-7 -Refer to Figure 11-7.The Figure Above Illustrates a Series of a Series

Figure 11-7
-Refer to Figure 11-7.The figure above illustrates a series of isoquants.Which of the following statements is true?

A) Points x,z,and y all represent the same output.
B) Points z and y represent the same output; this output is produced with more capital at z than at y.
C) Point x and y represent the same output but the cost of production at y is greater than the cost of production at x.
D) Point z represents a greater output than point x or point y.