1. In baking a cake, the ingredients needed are: 2 cups flour, 1 ½ cups sugar, 1/4 cocoa powder, and 1 Tbsp. of baking powder. If a teaspoon will use to measure the baking powder, how many teaspoons are needed for the cake?

A. 4 tsp.
B. 3 tsp.
C. 2 tsp.
D. 1 tsp.