Please choose the correct solution to the question: Preheat an oven to 315 degrees

Solution1: Open the oven door, make sure nothing is inside the oven such as pots, slide the oven knob and turn right using your fingers,until you are on the 315, remove your fingers, let oven heat for 15 minutes

Solution2: Open the oven door, make sure nothing is inside the oven such as pots, push in the oven knob and turn right using your fingers,until you are on the 315, remove your fingers, let oven heat for 15 minutes

Answer format: solution1/solution2
Answer: solution2