11. Vector Concatenation

How do you plan to solve it?

module concat8_packer (
  input      [3:0] A,
  input      [1:0] B,
  input      [0:0] C,
  input      [0:0] D,
  output     [7:0] OUT // Note: OUT is a wire by default
);

  // Use an assign statement for continuous assignment
  assign OUT = {A, B, ~C, D};

endmodule