The function Z below is to be implemented using an integrated circuit that contains only NOR gates. Use DeMorgan's laws to convert it to a form using only NOR gates (and inverters). Which function a), b), c), or d) is the correct result? Z = (A + B bar + C bar) middot (A bar + B + C bar) middot (A bar + B bar + C bar) a) Z = (A bar + B + C) bar + (A + B bar + C) bar + (A + B + C) bar bar b) Z = (A + B bar + C bar) bar + (A bar + B + C bar) bar + (A bar + B bar + C bar) bar bar c) Z = (A B bar C bar) bar middot (A bar B C bar) bar middot (A bar B bar C bar) bar bar d) Z = (A bar BC) bar middot (A B bar C) bar middot (ABC) bar a) b) c) d)