Which of the following statements about latches and flip-flops is NOT CORRECT?

A、ForanS-Rlatch,ifbothSandRare1,thenbothoutputsQandQNareforcedto0;
B、IfJandKareassertedsimultaneously,thenextstateofJ-Kflip-flopistheoppositeofitscurrentstate;
C、Edge-triggeredDflip-flopwillnevergoestometastablestate;
D、ForaDlatch,theQoutputwillretainitslastvaluewithoutchangewhenCinputretains0