11. Vector Concatenation

How do you plan to solve it?

module concat8_packer(input [3:0] A,input [1:0] B,input C,D,output [7:0] OUT);

assign OUT[7:4]=A[3:0];
assign OUT[3:2]=B[1:0];
assign OUT[1]=~C;
assign OUT[0]=D;

endmodule