Identify the variable and non-variable regions within the antibody. Non-variable Antigen NH NHA Antigen-binding sites Ķ Heavy chain -NH₂ Variable Host Es-s- Light chain Es-S- -s-s- гоос CO Coo coo- Which of the following best describes antibody structure and function? Choose one: O A. Each antibody has two variable regions that are both specific to the same antigen. O B. Each antibody has two variable regions that are each specific to different antigens. O C. Each antibody has one variable region that is specific to only one antigen. O D. Each antibody has one variable region that is specific to multiple antigens.