Best er diagram for this system shown in class diagram ?

General User - Name: String - username: String -password: String Date OfBirth Date -profilepicture : img 1:1 + set Name () + get Name () + set username + get username () + set password + get password + set Date Of Birth + get Date OfBirth 0 set profilepicture 0 + get profilepicture 0 1:1 parents Child ParentsID : Integer comment cmt; ChildID : Integer 1:1 1:1 Admin Teacher + set ChildiD 0 + get ChildID 0 + UpDate Profile() + show Results - AdminiD: Integer + set parentsID 0 + get parentsID 0 + UpDate Profile + show Results 0 TeacherlD : Integer comment cmt: + set AdminiD () + get AdminiD 0 + UpDate levels o + Add levels) + Delete levels + Create levels + Read comment + Serach Games 0 + set TeacherlDO + get Teacher DO + UpDate Profile + show Results 1: N 1: N 1:N 1:N Games 1: N Comment -GamesID : Integer Name : String - Levels : List - Difficulty: Integer CommentID : Integer - TeacherlD : Integer - ParentsID : Integer - LevellD : Integer Comment: String + set GamesID () + get GamesID 0 + set Name 0 + get Name + set Levels + get Levels 0 + set Difficulty 0 + get Difficulty 0 Results - Results ID: Integer - LevellD : Integer - ChildID : Integer Result: Integer - Comments : List + set CommentID 0 + get CommentiD 0 + Set Teachers + get Teacher D 0 + set ParentsID 0 + get ParentsID 0 + set Levells + get Level D + set Comment 0 + get Comment + Add Comment + Read comment () Level - Level D : Integer - Name: String - Difficulty : Integer 1: N 1 + set LevellD O + get Levell 0 + set Name ) + get Name 0 + set Difficulty O +get Difficulty 0 + Levels Results + set ResultsID 0 + get ResultsID 0 + set levell 0 + get level D 0 + set childID 0 + set childi 0 + set Result + get Result 0 + set Comments 0 get Comments 0 + ResultOfLevel