Certain methods of creating high-quality counterfeit banknotes involve making accurate measurements of the images pri...

Skylar on November 8, 2019

@Ryan-Mahabir, thanks for your question!

(C) is incorrect because making banknote images harder to measure does not necessarily translate to having a better printer. If banknotes were made with images that were impossible to measure, it would not matter if counterfeiters have the best printer because they would be unable to get the dimensions right. Therefore, (C) does not need to be true for the conclusion to be properly drawn.

(B) is correct because, if the measurement of banknote images was the only impediment to false replication, then ensuring that the images could not be measured would prevent this replication. Yet if other impediments existed, accurate measurements could be taken and the other impediments could be used instead to prevent false replications.

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