An Internal Auditor Is Reviewing Employee Travel Data to Identify

An internal auditor is reviewing employee travel data to identify opportunities to cut costs while ensuring adequate participation at conferences to support the organization's mission. Which of the following pieces of evidence would be sufficient for completing this task?

A) A log from the last year that includes dates of travel, conference titles, and conference objectives, all of which correspond with employee names and costs per trip.
B) A log that includes titles of conferences that all employees were invited to attend in the last year, along with the dates of those conferences and average costs per traveler.
C) A log of conferences titles, dates of travel for each employee, and a detailed summary of conference objectives and how they relate to the organization's mission needs.
D) A log of employee travel requests, which include the title of each conference, the conference objectives, anticipated dates of travel, and estimated costs.