The Below Figure Shows the Various Combinations of the Goods

The below figure shows the various combinations of the goods X and Y that yield different levels of utility.Figure 7.3

-Which of the following reflects the correct relationship between average total cost (ATC) and marginal cost (MC) ?

A) When MC > ATC; ATC is falling.
B) When ATC is minimum; ATC < MC.
C) When MC < ATC; ATC is falling.
D) When MC < ATC; ATC is constant.
E) When ATC < MC; MC is falling.