Finish the following sentence with the best choice: How to make urine solution to tan salmon leather.

Choices:
- Mix equal parts urine and bleach in an airtight container big enough so that the salmon skin floats freely in the solution.
- Mix equal parts urine and water in an airtight container big enough so that the salmon skin floats freely in the solution.

Answer:
Mix equal parts urine and water in an airtight container big enough so that the salmon skin floats freely in the solution.