challenge: What was the main reason for the lawsuit filed by Leighton Meester against her mother, Constance?
  
  A. Constance's alleged physical abuse against Leighton
  B. Constance's failure to pay back a loan from Leighton
  C. Constance's refusal to move to Los Angeles with Leighton as a child
  D. Constance's use of Leighton's money for her own expenses
  Answer: 