Which of the following statement is correct?

In the 40-wave system of WDM equipment, due to the aging of the customer’s optical cable, the optical cable should be changed between 2# and 3# sites, and the 4# optical amplifier site should be added between 2# and 3#.

Which of the following statement is correct?
A . 2# site optical power does not need to be re-commissioned
B . 3# site optical power does not need to be re-commissioned
C . Need to consider whether the dispersion budget is enough
D . No need to consider whether the dispersion budget is enough

Answer: C