In the 40-wavelength system of the WDM equipment, due to the aging of the optical cable of the customer, the optical cable between the 2# and 3# sites need to be replaced, and the 4# optical amplifier site needs to be added between 2# and 3#. Which of the following statements is correct?

In the 40-wavelength system of the WDM equipment, due to the aging of the optical cable of the customer, the optical cable between the 2# and 3# sites need to be replaced, and the 4# optical amplifier site needs to be added between 2# and 3#. Which of the following statements is correct?
A . The optical power of site 2# does not need to be commissioned again
B. The optical power of site 3# does not need to be commissioned again
C. Need to consider whether the dispersion budget is sufficient
D. There is no need to consider whether the dispersion budget is sufficient

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Answer: C