XYZ Corporation announced that it would pay a dividend to all shareholders of record as of Monday, November 2, 2020. Suppose it takes two business days for the new owners of a share of stock to be registered. a. When was the ex-dividend day? [ Select ] ["October 31", "October 30", "October 29", "October 28", "October 27"] b. When was the last day an investor could purchase XYZ stock and still get the dividend payment? [ Select ] ["October 31", "October 30", "October 29", "Octobef 28", "October 27"]