单项选择题

Questions 17—20 are based on the following passage about the institutions of EU. You now have 20 seconds to read Questions 17—20. What’s the responsibility of the Court of Auditors

A.Reviews the legality of acts of the Commission and Council.
B.Oversees long-term investment.
C.Monitors the revenues and expenditures of the EU.
D.Advises the Commission and the Council on general economic policy.