3 Which of the following represents the most simplified Boolean expression ?of the given circuit Note that V is the valid bit. Note that V is the valid bit. V=O only when X,Y,Z .and W are all zero and V=1 otherwise (b 2.5) 1 1. 0 4x1 MUX F Z Z SI SO D3 B1 4x2 priority encoder Y D2 0 Z D1 W DO V