Question: Which act created the Upper Canada provinces?

Is "The Constitutional Act of 1791 created the provinces of Upper Canada (mainly English-speaking) and Lower Canada (mainly French-speaking) to defuse tensions between the French and British communities, and implemented governmental systems similar to those employed in Britain, with the intention of asserting imperial authority and not allowing the sort of popular control of government that was perceived to have led to the American Revolution." the correct answer?
Options are:
[a]. yes;
[b]. no;
[a].