WhichofthefollowingisthecorrectwiringorderforanRJ－11twolinejack?()A.Black，Green，Red，YellowB.Black，Red，Green，YellowC.Red，Black，Green，YellowD.Yellow，Red，Green，Black
题目
WhichofthefollowingisthecorrectwiringorderforanRJ－11twolinejack?()
A.Black，Green，Red，Yellow
B.Black，Red，Green，Yellow
C.Red，Black，Green，Yellow
D.Yellow，Red，Green，Black