权变理论认为管理者如果能够掌握最佳的管理和激励员工的方式，就可以更加成功，并且可以将这些经验应用到任何一个领域。()

A. He was hired as a draftsman in his family project.
B. He managed his family property in Wisconsin.
C. He built a small house in his hometown.
D. He worked as a builder in his hometown.