18 A multiplexer circuit has 4 selection lines to control 16 inputs. The logic function is given as F(A,B,C,D=2m(0,1,4,5,6,9,10,12,14,15) i) Implement the function using 16xl MUX ii) Implement the function using 8x1 MUX by keeping A as the input variable. [2.5] [2.5)