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单项选择题 Click the Exhibit button. Given the following parameters: transmitter output (min): -2 dBm receiver input (min): -28 dBm 15216 Mux and Demux loss: 4.5 dB 16 channels maximum In which sites shown in the exhibit could the 15216 EDFAs be placed to minimize the number of EDFAs needed?（）

A、Locations B, C only

B、Locations A, B, C only

C、Locations A, B, D only

D、Locations B, C, D only

E、Locations A, B, C, D

  • A

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