challenge: Why was 'And to Think That I Saw It on Mulberry Street' pulled from publication by Dr. Seuss Enterprises in March 2021?
  
  A. Due to a decline in popularity of Dr. Seuss books
  B. To make way for new publications by Geisel
  C. Due to the inclusion of imagery deemed 'hurtful and wrong' by Dr. Seuss Enterprises
  D. As a result of a change in illustration style by Geisel
  Answer: 