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← ScienceWhich risk arises during quantum key distribution using entanglement?
A)Eavesdropping via quantum state measurement✓
B)Increased computational cost cryptographic decoding
C)Signal decoherence through fiber optic attenuation
D)Key exchange is computationally intractable
💡 Explanation
Eavesdropping can occur because measurement on one entangled photon collapses instantaneous wave function of paired, allowing interception. Qubit entanglement means state is linked, therefore information obtained without direct physical access, rather than relying purely complexity/ computational cost for security.
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