According to the Textbook, Which of the Following Best Summarizes

According to the textbook, which of the following best summarizes recent trends in sales organization design?

A) Market specialization has increased and organizations have become flatter with larger spans of control.
B) Product specialization has increased and organizations have become taller with smaller spans of control.
C) Functional specialization has increased and organizations have added more staff positions to support line sales managers.
D) Geographic specialization has increased and organizations have become flatter with smaller spans of control.