challenge: Which of the following statements is true about Dr. Janaki Ammal?
  
  A. She lived in an all-male residence hall during her time at the University of Michigan.
  B. She primarily worked with a professor from the Department of Chemistry.
  C. She was the first Indian woman to obtain a PhD in physics in the U.S.
  D. She was conferred a DSc (honoris causa) by the University of Michigan.
  Answer: 