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;
assign OUT[3:2] = B;
assign OUT[1] = ~C;
assign OUT[0] = D;
 endmodule