11. Vector Concatenation

How do you plan to solve it?

/*Write your code here*/
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[1:0]= {~C,D};
endmodule