Binding precedent in the common$-$law jurisdictions means that the common$-$law courts have a hierarchy. Choose the correct example of that hierarchy.

a$.$ The Court of Queen's Bench of Alberta must follow the decision of the Court of Appeal of Ontario on the same legal issue.

b$.$ The Court of Queen's Bench of Saskatchewan must follow the decision of the Court of Appeal of Saskatchewan on a different legal issue.

c$.$ The Supreme Court of British Columbia $($a trial court$)$ must follow the decision of the Supreme Court of Canada, even though it is on a different legal issue.

d$.$ The Court of Appeal of Ontario must follow the decision of the Supreme Court of Canada on the same legal issue.

e$.$ The Court of Queen's Bench of Alberta must follow the decision of the Provincial Court of Alberta on the same legal issue.