You have identified a protein in a cell that you know that comes from the human body. With respect to that protein you have also determined that it allows sodium ions to go through, and that it also is a "gated channels" protein. This protein is possibly: A) a mechanically gated protein, which responds to pressure B) a chemically gated protein, which responds to ligands C) a voltage gated protein, which responds to electrical signals D) All of the answers are correct E) None of the answers are correct Please leave a justification for your answer.