Explain how to implement a 4-bit full adder (4FA) which takes as input 2 bits x, y and two input carries cm/ and Cim.2 and produces a sum bit and two output carries c out and c2,out (5 pts) Show the truth table (5 pts) (10 pts) Simplify the expressions for the output bits using Kmaps. .(5 pts) Show how to add 3 numbers P PaPPo, 9-0.010% and R - RoR,Ro using three 4FAs and two FAs. Draw a diagram as in the case of a ripple adder but this time combining both 4FAs and FAs (S pts) Explain how to add the same 3 numbers using FAs only How many FAs are required in this case