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Which consequence results when thin-film interference affects optical data storage?

A)Reduced data writing contrast
B)Increased disc rotational speed
C)Enhanced thermal data stability
D)Improved laser focusing precision

💡 Explanation

Reduced data writing contrast occurs because destructive interference diminishes the reflectivity difference between marked and unmarked regions. Therefore, data bits are harder to distinguish, rather than improved reading; this is because the signal reflected back becomes less clear, masking the written marks.

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