Please choose the correct solution to the question: How to make a root beer float

Solution1: Pour hot root beer into a tall glass. Fill the glass three quarters of the way full. Take a large scoop of vanilla ice cream and gently  drop it into the glass.

Solution2: Pour cold root beer into a tall glass. Fill the glass three quarters of the way full. Take a large scoop of vanilla ice cream and gently  drop it into the glass.

Answer format: solution1/solution2