human
Solve the following python programming problem given the following code:
def Question(order, option = None) : 
    'Decorator for Builder methods that represent questions.
  
  Args:
    order: Unique id for this question which will be used to order it when
      presented to the user. Most commonly an int, but any comparable should
      work.
    option: The parent option (default None). Providing this marks the question
      as a subquestion: it will only be applied (and, in a future version, 
      shown) if the parent option is selected.
    ' 
    def decorate(func) : 
        func.order = order 
        if option : 
            option.subquestions [order] = func 
else : 
            func.is_question = True 
return func 
return option 

    
    

    Fix the buggy line: return option
assistant
#Here is Python code to fix the buggy line: return option
.

return def decorate(