Berry Pound Cake with Whipped Cream

Name: Berry Pound Cake with Whipped Cream
Ingredients: 1 c. unsalted butter; 2¾ c. all-purpose flour; ½ c. cake flour (not self-rising); 1 tbsp. baking powder; 1 tsp. salt; 2¼ c. granulated sugar; 1½ tsp. pure vanilla extract; 3 large eggs; 1 large egg white; 1 c. whole milk; 1½ c. heavy cream; 1 tbsp. confectioners' sugar; 1 c. fresh blueberries; 1 c. fresh raspberries