1. What is the correct substitution of 1 teaspoon baking powder?
A. 1/4 tsp baking soda, 1/4 tsp cream of tartar and 1/4 tsp cornstarch
B. 1/4 tsp baking soda, 1 tsp cream of tartar and 1/4 tsp cornstarch
C. 1/4 tsp baking soda, 3/4 tsp cream of tartar and 1/4 tsp cornstarch
D. 1/4 tsp baking soda, 1/2 tsp cream of tartar and 1/4 tsp cornstarch
What is the remedy​