The characteristic equation of J-K flip-flop is ______________

• A. Q(n+1)=JQ(n)+K’Q(n)
• B. Q(n+1)=J’Q(n)+KQ'(n)
• C. Q(n+1)=JQ'(n)+KQ(n)
• D. Q(n+1)=JQ'(n)+K’Q(n)