A taxpayer calls you with an issue you do not know how to handle. You would be most correct to do which one of the following? A. Tell the taxpayer to call back tomorrow as there is no one available to help today. B. Ask permission to place them on hold and seek assistance from a colleague. C. Direct the taxpayer to visit the Revenue Office in person to discuss their issue. D. Advise the taxpayer to call your supervisor who can assist them