challenge: Who were some of the notable politicians that served as mentors to Dolph Briscoe?
  
  A. Vice President Nelson Rockefeller, President Richard Nixon, House Speaker Newt Gingrich, and Governor George Wallace
  B. Vice President John Nance Garner, President Lyndon Baines Johnson, House Speaker Sam Rayburn, and Governor Sterling
  C. Vice President Al Gore, President Bill Clinton, House Speaker Nancy Pelosi, and Governor Arnold Schwarzenegger
  D. Vice President Hubert Humphrey, President Dwight D. Eisenhower, House Speaker Tip O'Neill, and Governor Ronald Reagan
  Answer: 