Please choose the correct solution to the question: What is the best way to quietly go up a set of creaky stairs?

Solution1: Step on the front vertical surface of the steps, it will be quieter and creak much less (this comes in handy if you are sneaking home).

Solution2: Step on the sides of the steps, it will be quieter and creak much less (this comes in handy if you are sneaking home).

Answer format: solution1/solution2
Answer: solution2