Fiedler's Contingency Theory of Leadership Has Made an Important and Lasting

Fiedler's contingency theory of leadership has made an important and lasting contribution to the study of leadership because it:

A) Is the only leadership theory to adopt a contingency approach
B) Was the first theory to recognise the existence of leadership substitutes
C) Suggests that organisations need to engineer the situation to fit the leader's preferred style,rather than vice versa
D) Discovered that effective leaders do not have a common set of competencies