Please choose the correct solution to the question: How can I unstop a sink that isn't draining?

Solution1: First pour 1 cup baking soda directly into blocked drain (It's ok if there is some water backed up into it), then pour vinegar (about 2 cups) into the drain, it will react and unclog your sink.

Solution2: First pour 1  baking pan directly into blocked drain (It's ok if there is some water backed up into it), then pour vinegar (about 2 cups) into the drain, it will react and unclog your sink.

Answer format: solution1/solution2
Answer: solution1