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Which risk increases inside semiconductor flash memory when exceeding a critical temperature threshold?

A)Increased gate oxide breakdown events
B)Unintended electron quantum tunneling occurs
C)Elevated junction transistor leakage current
D)Increased diffusion dopant concentration variance

💡 Explanation

Because the **quantum tunneling** probability escalates exponentially with temperature, stored electrons confined in the floating gate leak through the insulation; therefore stored data reliability decreases, decreasing storage longevity; rather than increased breakdown, which correlates directly with applied voltage.

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