Which of the Following Is a Valid Conclusion Based on Research

Which of the following is a valid conclusion based on research about the situational perspective on leadership effectiveness?

A) No single style of leadership will be effective in all situations.
B) When the readiness level of followers is low, the participating and delegating styles are most appropriate.
C) Using the telling style with an able and talented veteran worker will seem like micromanaging and will likely produce resentment.
D) When the readiness level of followers is high, the participating and delegating styles are most appropriate.