challenge: What was Margrit Weber-Röllin's achievement in the Cantonal Council of Schwyz?
  
  A. She was the first woman to be elected as a member of the Christian Democratic People's Party of Switzerland
  B. She was the longest-serving member of the Cantonal Council of Schwyz
  C. She was the first woman to be elected as the president of the Christian Democratic People's Party of Switzerland
  D. She was the first woman to serve in the Cantonal Council of Schwyz and later became the Landammann of Schwyz
  Answer: 