I would personally be using this analysis to either Long or Short USDCAD. As far as explanation the first demand zone is a (DBR) Drop Base Rally indicating Buyers overpowered the sellers.
*The bottom demand zone is: A: The lowest low B: The first rally indicating buyers are more greedy and sellers are more fearful there.
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Looking back; sellers are in a demand zone looks like the buyers will be overpowered.