Which of the Following Feedback Approaches Would Be Acceptable, in the Right

Which of the following feedback approaches would be acceptable, in the right circumstances?

A) Keep doing these helpful things; stop doing these unhelpful things; and start doing these things.
B) Do more of these actions; do less of these actions; and behave and carry on practices the same as this one.
C) 'A very engaging presentation, although a little more detail on the importance of good housekeeping would have been good. Overall, though, very well done.'
D) Applying the hot-stove principle to skilled and experienced employees who 'know better'.
E) All of these responses are correct.