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Consider the following statements about rate of return.

1. The internal rate of return assumes reinvestment at itself   2. The alternative with the highest rate of return is always best   3. Two sign changes permit at most two positive roots

  • A.1 and 2 only are correct
  • B.1 and 3 only are correct
  • C.1, 2 and 3 are all correct statements about rate of return
  • D.2 and 3 only are correct

Answer: B

Correct answer: 1 and 3 only are correct

Statements 1 and 3 are correct: the internal rate carries an implicit reinvestment assumption at its own value, and Descartes’ rule allows at most two positive roots for two sign changes. Statement 2 is the central error of the method - a rate is a ratio and ignores scale, so the highest rate need not identify the best alternative.

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