The Following Sentences Form a Paragraph

The following sentences form a paragraph. For each pair, select the answer with more sentence variety. Which answer choice has sentence variety?

A) To many, she represented the stylish, multitasking modern woman. The lessons of a lifetime served her well. On November 4, 2008, Barack and Michelle Obama stepped into history. They became President and First Lady of the United States.
B) To many, she represented the stylish, multitasking modern woman. The lessons of a lifetime served her well. On November 8, 2008, Barack and Michelle Obama stepped into history, as President and First Lady of the United States.