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Consider the following statements about spectral and metameric matches.
1. A spectral match survives every change of condition.
2. A metameric pair may match more exactly under one condition.
3. A spectral match always gives a smaller colour difference.

  • A.All of them
  • B.1 and 2 only
  • C.3 only
  • D.1 only

Answer: B

The first two are correct and separate robustness from closeness. The third does not follow, since the two properties are entirely independent. Either can be good while the other is poor. The two are entirely independent.

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