By MarketsFarm WINNIPEG, April 20 (MarketsFarm) – The Canadian dollar was slightly lower Monday morning, due to volatility in North American crude oil prices. As of 8:39 CDT, the Canadian dollar was at US$0.7102 or C$1.4828, compared to Friday’s close of US$0.7124 or C$1.4037. Benchmark crude oil prices were weaker Monday morning, particularly West Texas