Please choose the correct solution to the question: How do you remove odors from refrigerator?

Solution1: Deodorize with baking soda. Leave an closed container of baking soda in the fridge to absorb refrigerator smell for at least 24 hours.

Solution2: Deodorize with baking soda. Leave an open container of baking soda in the fridge to absorb refrigerator smell for at least 24 hours.

Answer format: solution1/solution2