Which of the Following Was Not One of the Problems

Multiple Choice

Which of the following was not one of the problems identified by Billie Boyd, the owner of Deluxe Diner, as she used her communication competency to solve the problem of long lines at lunchtime?

A) Customers were waiting in line for as long as 15 minutes.
B) Usually, tables were available.
C) Many of the customers were regulars.
D) All of the above were problems that Billie Boyd identified.