Which of the following is true about comments in a program?

Hint: The answer to this among the things said in the first lecture in the second week of the course.

If there is no lecture on Monday that week, it might be inferred from the "change.py$"$ example

among the $"$In$-$class Examples" on Canvas.

Group of answer choices

they should be typed in first, to provide a plan for the implementation

they are added at the end, after the program is otherwise complete and correct

they must look just like Python code, except for the # in front

they are a programmer aid only, and should be deleted when the program is done