A recipe asks that the following three ingredients be mixed together:

- Add 1/2 cup of flour for every 1/2 teaspoon of baking soda and every 1/4 teaspoon of salt.

Select all that apply:

A. 1 teaspoon of baking soda per 1 cup of flour
B. 2 teaspoons of salt per 1 cup of flour
C. 1 teaspoon of baking soda per 2 teaspoons of salt
D. 1/2 teaspoon of salt per 1 teaspoon of baking soda
E. 2 teaspoons of salt per 1 teaspoon of baking soda