Given a list of steps and an additional step, determine where the step fits into the original list of steps. A correct answer, correctly places the given step into the set of steps so that it creates a new plausible set of steps. Output must be formatted as 'After step n', where n is the step number after which the given additional step is to be inserted.
Q: Steps: (1) Boil salt water (2) The water will turn into water vapor (3) Collect the water vapor (4) The water vapor will turn into liquid water (5) The salt will be separated from the water.  
Where does the following step fit into the given list of steps: Allow the water vapor to cool 
A: 
 After step 3. 