In May 2005, U

In May 2005, U.S. Attorney Michael J. Sullivan announced that the United States had settled civil claims arising out of a suit that alleged Oracle Corporation had violated the False Claims Act in connection with billing the federal government for software training services. The U.S. government learned about the overcharging from a former Oracle vice president. The vice president acted as a(n) __________ .

A) whistleblower
B) ethical ombudsman
C) secondary stakeholder
D) covert stakeholder
E) secondary shareholder