This is a question with answer options. Goal: How do you remove odors from refrigerator?

Which of the following methods is more reasonable for accomplishing this goal?

Choose from: A. Deodorize with baking soda. Leave an closed container of baking soda in the fridge to absorb refrigerator smell for at least 24 hours.; B. Deodorize with baking soda. Leave an open container of baking soda in the fridge to absorb refrigerator smell for at least 24 hours.;...I think the answer is
B.