USD/CAD tested C$0.9980 and back off to current C$0.9968 as rate reacts to Canadian GDP Q1 data. Rate seen meeting resistance from offers placed ahead of C$0.9980. Traders note that the C$0.9975 level holds the strike of an expiring option for the 1400GMT structure. Another expiry noted at C$0.9895. Traders flash up stops in place on a break above C$0.9990.