Which of the Following Statements Is TRUE About Relevant Range

Multiple Choice

Which of the following statements is TRUE about relevant range?

A) When costs reach a level above the relevant range, they are considered appropriate for analysis.
B) Linear estimates of an economist's curvilinear cost function is only valid within the relevant range.
C) When costs reach a level below the relevant range, they are considered appropriate for analysis.
D) The nonlinear relevant range is ignored, and only those costs outside of this range may be considered.