Identify the impact of each of the following trends on the aggregate demand curve. a. If a downturn in the American economy decreases Canadian exports then the aggregate demand curve [(Click to select) b. If the federal government increases its purchases of goods and services then the aggregate demand curve [(Click to select) c. If the price level in Canada falls then the aggregate demand curve [(Click to select) d. If sales taxes on consumption items rise then the aggregate demand curve [(Click to select) e. If a technological breakthrough makes investment more attractive for Canadian businesses then the aggregate demand curve [(Click to select) f.If global political troubles make investment less attractive for Canadian businesses then the aggregate demand curve (Click to select) (Click to select)