The correct option is D The Court of Auditors
The Court of Auditors (European Court of Auditors, ECA) is the fifth institution of the European Union (EU). It was established in 1975 in Luxembourg.
Despite its name, the Court has no judicial functions. The primary role of the court is to externally check if the budget of the European Union has been implemented correctly, in that EU funds have been spent legally and with sound management.