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Incremental benefit cost analysis examines the ratio of

  • A.total benefits to total costs of each alternative
  • B.benefits to disbenefits within each alternative
  • C.costs to disbenefits between alternatives
  • D.added benefits to added costs between alternatives

Answer: D

Correct answer: added benefits to added costs between alternatives

\[ \frac{\Delta B}{\Delta C} = \frac{B_2 - B_1}{C_2 - C_1}. \] The question asked of every step up is whether the extra money buys at least its own value in extra benefit. Answering it increment by increment is what makes the method scale-aware where a comparison of overall ratios is not.

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