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For those same three alternatives, the increment from the first to the second has a ratio of

  • A.1.38
  • B.1.33
  • C.0.75
  • D.1.40

Answer: B

Three million of extra cost buys four million of extra benefit, so the increment passes and the second alternative displaces the first as defender. Combined with the failed third increment, the second is the recommendation.

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