11. Vector Concatenation

How do you plan to solve it?

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

    assign OUT = {
        A[3:0],
        B[1:0],
        ~C,
        D
    };
endmodule