Which of the Following Examples Demonstrates How Successful Organizations Manage

Which of the following examples demonstrates how successful organizations manage their primary activities?

A) Motorola has revised its compensation system to reward employees who learn a variety of skills.
B) Hewlett Packard has cut lead time from five days to one by employing JIT inventory management.
C) National Steel improved its efficiency by reducing the number of job classifications.
D) Wal-Mart implemented a sophisticated information system that resulted in reduced inventory carrying costs and shortened customer response times.