Doughnuts can be placed into three categories; glazed, filled, and cake doughnuts. most popular are the glazed doughnuts, which are made with yeast and sweet dough. they are dipped in a sweet glaze or covered with icing, usually chocolate or vanilla. filled doughnuts are usually made with yeast, too. the light density permits them to be inserted with a number of different fillings for extra sweetness and flavoring. the filling options include vanilla cream, chocolate cream, pudding, custard, and jellies. these filled desserts are formed into either a round or oblong shape without the center whole. cake doughnuts are another favorite variety. they are the densest and heaviest pastry of the doughnut family because they are not made with yeast. these treats derive their name from their cake-like density. in addition, the name is appropriate because of the popular cake toppings used on them, such as confetti sprinkles, frosting striping, coconut, and chopped nuts.      which statement best summarizes paragraph four of this selection? a) glazed, filled, and cake are the three categories of doughnuts.  b) glazed, filled, and cake doughnuts are made with yeast in america.   c) the three categories of doughnuts are determined by their shape and taste.   d) the three categories of doughnuts are glazed, filled, and cake; they are named by their characteristics and ingredients.