A.\(48,{0.10^{ - 3}}\,\,{\rm{W}}b\).
B.\(51,{2.10^{ - 3}}\,\,{\rm{W}}b\).
C.\(38,{4.10^{ - 3}}\,\,{\rm{W}}b\).
D.\(85,{3.10^{ - 3}}\,\,{\rm{W}}b\).

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