TwoDS8700systemshavebeenproposedforadisk-to-diskBCsolution.Eachsystemhas200TBinstalled,withadatachangerateof18%perday.Two2GbpsCWDMlinksareinplacebetweentheremotedatacenterswithanaverageutilizationrateof55%.TheproposedsolutionincludesadditionalCWDMports.WhichofthefollowingshouldjustifytheadditionalCWDMports()
A.theDiskMagicconfigurationreport
B.anengineerfromthetelcomprovidingthedarkfiber
C.thebandwidthcalculations
D.aCompeteLineanalysis