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Which outcome occurs when Carbon-14 dating pushes beyond limits?

A)Radiocarbon reaches background radiation level
B)Sample contamination increases sharply
C)Isotopic fractionation becomes unpredictable
D)Decay constant is subject variation

💡 Explanation

Radiocarbon dating relies on the predictable **Radioactive decay** of Carbon-14; because prolonged decay reduces C-14, it is no longer distinguishable from background level, therefore accurate dating becomes impossible, rather than a contamination error or decay constant variation.

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