AssumeiandjaremembervariableswithdoubletypeinclassX.Inthefollowingcodes，whichoneisNOTRIGHTconstructor?()AdoubleX(doublek){i=k;returni;}BX(doublem，doublen){i=m;j=n;}CX(){i=;j=;}DX(doublek){i=k;}