According to Russell et al, did the Supreme Court of Canada radically overturn Judicial Committee of the Privy Council (JCPC) precedents when it became Canada's highest court? O a. Yes, Supreme Court judges didn't think JCPC rulings were valid because the JCPC was basing its rulings on ideas that were more appropriate to the British context than the realities of Canada's federal system. O b. Yes, the Supreme Court saw no practical constraints on its power after it became Canada's highest court. O c. No, the Supreme Court has charted its own course, but it has done so incrementally in a way that carefully engages JCPC precedents. O d. No, the Supreme Court has never made a decision that challenged a JCPC precedent