Arequirementissimplyastatementofwhatthesystemmustdoorwhatcharacteristicsitneedstohave.Requirementswrittenfromtheperspectiveofuserandfocusonuserneedsarecalled__(71)__.Requirementswrittenfromthedeveloper'sperspectiveanddescribehowthesystemwillbeimplementedarecalled__(72)__.Requirementsevolvefromdetailedstatemensofbusinesscapabilitiesthatasystemshouldhavetodetailedstatementsofthetechnicalwayinwhickthecapabilitieswillbeimplementedinthenewsystem.Requirementscanbeeitherfunctionalornofunctionalinnature.Forexample,duringtheanalysisphaseoftravelvehiclessalessystem,thesystemthatmusthavetheabilitytosearchforavailableinventoryis__(73)__.TherequirementthatthesystemshouldbeabletoworkonanyWebbrowserbelongsto__(74)__.ThatcustomerpersonalinformationisprotectedincompliancewiththeDataProtectionActisarequirementof__(75)__. (74)应选？
A.functional requirements
B.technical requirements
C.operational requirements
D.information requirements
正确答案是C