What is the primary purpose of a penetrant sensitivity level designation (e.g., Level 1/2, Level 1, Level 2, Level 3, Level 4)?
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A
To indicate the required dwell time for each penetrant
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B
To classify the penetrant's ability to detect very fine discontinuities
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C
To specify which developer must be paired with the penetrant
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D
To define the maximum inspection temperature for the product