Jack Welch's Management Style at GE Can Be Considered as an Example

Jack Welch's management style at GE can be considered as an example of:

A) The Planning school of management, characterized by quantitative models
B) Managerial guidance, where few simple rules combined with powerful incentives created conditions conducive to rapid adaptation
C) Real option theory, built around the value attached to the flexibility of strategic managerial orientations
D) An informal and unsuccessful way to run a large diversified firm