You are litigating Illinois property law questions in the United States District Court for the Northern District of Illinois based on diversity jurisdiction. In which sources of primary law would you do your research? Why? Evaluate these in terms of efficient use of your research time. United States Supreme Court cases Case from the Illinois Supreme Court and intermediate appellate courts Cases from the United States Court of Appeals for the Seventh Circuit Cases from the other two United States district courts in Illinois Property law cases from other states