Which of the Following Statements Describe the Activities of a Whistle-Blower

Which of the following statements describe the activities of a whistle-blower?

A) Mattel employees were sorry that 150 of the 10 million Power Wheels cars and trucks the company sold had caught on fire.
B) Mattel research engineers proved that the spate of fires in the company's Power Wheels cars and trucks was the result of consumers' tinkering with the engine.
C) One of the Mattel Power Wheel cars that caught on fire and slightly burned its rider was owned by a former Mattel employee.
D) The Consumer Product Safety Commission investigated the fires and ordered a recall for repair of all 10 million units that had been sold.
E) An employee of Mattel reported to the CPSC that Mattel was knowingly manufacturing an electrical system for Power Wheels that would catch on fire after long use.