Secretarial is not the type of information system studied in this course.
An information system refers to a system that provide information that an organizations need to be able to manage themselves efficiently and effectively,
Operational, managerial and executive information system are studied.
Hence, the Secretarial system is not the type of information system studied in this course.
Therefore, the Option D is correct.
Read more about information system
brainly.com/question/14466390
