Which of the Following Statements Is True

Multiple Choice

Which of the following statements is true?

A) Marginal analysis is a key tool used while optimizing using total value.
B) Before and after comparisons can be used in both optimization using total value and optimization using marginal analysis.
C) Marginal analysis is the comparison of economic outcomes before and after some economic variable is changed.
D) Before and after comparisons involve calculating the incremental cost of moving from one alternative to the next best alternative.