Manyoftheactivitiesperformedduringthepreliminaryinvestigationarestillbeingconductedin____,butinmuchgreaterdepththanbefore.Duringthisphase,theanalystmustbecomefullyawareofthe____andmustdevelopenoughknowledgeaboutthe____andtheexistingsystemstoenableaneffectivesolutiontobeproposedandimplemente D．Besidesthe____forprocessanddataofcurrentsystem,thedeliverablefromthisphasealsoincludesthe__请作答该选项__fortheproposedsystem. A.hardwarean
A.software specification B.system performance specification C.formal requirements definition D.general problem statement正确答案C
