challenge: Where does the southern segment of Indiana State Road 1 (SR 1) begin?
  
  A. At U.S. Highway 50 and Interstate 275 in east-central Dearborn County
  B. At U.S. Route 20 in east-central Steuben County
  C. At Interstate 469 south of Fort Wayne
  D. At Interstate 69 on Fort Wayne's north side
  Answer: 