A Major Factor That Company Executives Need Not Worry About

A major factor that company executives need not worry about when their company is managing many diverse,unrelated firms is

A) choosing business-unit heads having the requisite combination of managerial skills and know-how to motivate people.
B) understanding the true value of strategic investment proposals by business-unit managers.
C) knowing what to do if a business unit stumbles.
D) "managing by the numbers"-that is,keeping a close track on the financial and operating results of each subsidiary.
E) staying abreast of what's happening in each industry and subsidiary.