You are given a CMOS logic circuit for which the pull-up network with PMOS transistors has been provided below. (a) Complete the pull-down network with NMOS transistors. (b) For the NMOS transistors in the pull-down network, we'll label the one that uses A, B, C, and D as input as M5, M6, M7, M8, respectively. If inputs A and B are at logic 0 and C and D are at logic 1, determine which of the transistors (M1~M8) are ON and which are OFF. (c) Determine the logic function that is implemented by this CMOS logic circuit.