Which of the following statements about the modulation technologies of the 40Gbit/s and 100Gbit/s coherent systems are correct?
A. The modulation technology used in a 100G coherent system is ePDM-QPSK.
B. The modulation technology used in a 40G coherent system is ePDM-BPSK.
C. The modulation technology used in a 40G coherent system is ePDM-QPSK.
D. The modulation technology used in a 100G coherent system is ePDM-BPSK.
Which of the following statements about the modulation technologies of the 40Gbit/s and 100Gbit/s coherent systems are c
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