Sharon works in the travel division of Weston Inc., a software company, and is responsible for arranging the travel documents of the employees who travel to other countries for official purposes. The documents are sorted based on the different divisions of the company, such as marketing, sales, training, and production. Given this information, which of the following organizational structures does Weston Inc. most likely follow?
a. Geographic departmentalization
b. Product departmentalization
c. Customer departmentalization
d. Functional departmentalization