Question: How to make a root beer float
Option 0: 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.
Option 1: 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: 1