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],   // [7:4]
        B[1:0],   // [3:2]
        ~C,       // [1]
        D         // [0]
        };

endmodule