Finish the following sentence with the best choice: How can I unstop a sink that isn't draining?

Choices:
- 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.
- 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:
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.