challenge: Why was Gustave Caillebotte's painting 'Les raboteurs de parquet' rejected by the Salon in 1875?
  
  A. The jurors found the subject matter too 'vulgar' and the workers not fully clothed
  B. The jurors thought the painting was too large for the exhibition space
  C. The jurors deemed the painting too abstract
  D. The jurors didn't think the painting was impressionistic enough
  Answer: 