Which of the Following Employees Would Be a Source of Competitive

Which of the following employees would be a source of competitive advantage?

A) Angie, who graduated with decent grades from a mid-ranked college.
B) Paul, who has developed three patented systems for his company.
C) Herb, who attends company management training with 11 other employees.
D) Ruth, who is an entry-level employee with a high-school diploma.
E) Shi Hae, who is one of 15 customer service representatives in the call center.