What role does an organizational yellow pages play in a company?

Question $5$ options:

It is a synonym for an expertise location system. It helps employees locate human knowledge resources within the organization.

It is a common name for organizational newsletters that help disseminate relevant lessons learned to employees

It is another name for a standard office telephone directory, but it also includes the employees' email and office location.

The yellow pages are a list of emergency contact numbers that all employees must have quick and easy access to$.$ It is printed on yellow paper to ensure that it is easily identified on a busy desk or filing system.

None of the above