For 10G and coherent 100G mixed transmission systems, which of the following description is correct?

For 10G and coherent 100G mixed transmission systems, which of the following description is correct?
A . It is recommended to use a long wavelength for the 10G channel and a short wavelength for the 100G channel.
B . Commissioning is based on 100G commissioning requirements, that is, non-standard fiber optic power commissioning.
C . For 100G single wave, because the dispersion tolerance is very large, the dispersion compensation can be compensated according to the 10G compensation principle.
D . 100G board OSNR threshold and 10G are basically the same, so the configuration of the amplification plate according to 10G standard is ok.

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Answer: C