The following is the client-side logical port of the board in the standard mode.

• A.n(Nn/OUTn)-OCH: 1-ODUk: m-ODUp:a
• B.ODUkLP-n
• C.RX/TX-n
• D.ClientLP-n

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When the input optical power of the amplifier at the receiving end OAU is lower than the nominal optical power, which of the following are wrong in the operation?

• A.Adjust the dimmable fading before the terminating amplifier to increase the input optical power of the amplifier
• B.Improve the sending optical power of the originator
• C.When the input optical power cannot be increased by adjusting the adjustable attenuator, the adjustable attenuation at the input of the amplifier is removed.
• D.Set the OAU gain so that its output reaches the nominal value

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