11. Vector Concatenation

How do you plan to solve it?

/*Write your code here*/
module concat8_packer
(
    input [7:0] A,
    input [1:0] B,
    input       C,
    input       D,
    output [7:0] OUT
);
    assign OUT = {A[3:0], B[1:0], ~C, D};

endmodule