66. Demultiplexer

How do you plan to solve it?

/*Write your code here*/
module demux1to4(d,s,y);
input d;
input [1:0] s;
output [3:0] y;
assign y[0]=(s==2'b00)&d;
assign y[1]=(s==2'b01)&d;
assign y[2]=(s==2'b10)&d;
assign y[3]=(s==2'b11)&d;
endmodule