In radiative coupling, the emitter radiation field_____________?

A. Decays as R, where R is the separation distance between the emitter and the receptor

B. Decays as 1 / R, where R is the separation distance between the emitter and the receptor

C. Decays as 1 / 2 R, where R is the separation distance between the emitter and the receptor

D. Decays as 2R, where R is the separation distance between the emitter and the receptor

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