Question (2): [25 marks] 5 marks for each part A combinational circuit has 4 inputs (A, B, C, D) and 1 output (F). ABCD represent a majority function. The output of the majority function is equal to 1 if the input variables have more 1's than O's, otherwise the output is 0. a. Construct the truth table of the required circuit. A 0 0 0 0 10 0 0 00 0 101 0 110 jo 1 lololo 1 110110 101 1 b. Express F in maxterm expansion (Algebraic and decimal form). c. Implement the minimized expression of F using 3-level all NAND gate circuit