A is definitely the right answer
March 3rd, 1918 is the date the treaty was signed.
True.
And this is not only true for the distant and not so distant past, it's also true for the present as well. Slaves and prostitutes still exist around the world, despite us thinking that slavery may have been abolished. This is sadly not the case; in some areas in Africa and the Middle east, slavery still exists.
The expulsion of the Acadians was justified since Britain needed strong allies in the event of a war