Please choose the correct solution to the question: How do you clean a dishwasher?

Solution1: Start with an full dishwasher. Place a cup of white vinegar in a dishwasher-safe container on the upper rack of the machine. Run the dishwasher through a hot-water cycle.

Solution2: Start with an empty dishwasher. Place a cup of white vinegar in a dishwasher-safe container on the upper rack of the machine. Run the dishwasher through a hot-water cycle.

Answer format: solution1/solution2
Answer: solution2