11. Vector Concatenation

How do you plan to solve it?

module concat8_packer (
    input  [3:0] A,   // 4-bit input
    input  [1:0] B,   // 2-bit input
    input        C,   // 1-bit input
    input        D,   // 1-bit input
    output [7:0] OUT  // 8-bit output
);

    assign OUT = {A, B, ~C, D};

endmodule