Aircraft

Which of the following statements is correct in relation to the location and dimensions of the registration marks to be used $($as established by ICAO$)?$

Select your answer;

A$)$ ICAO cannot determine the dimensions of the registration marks as the Chinese, Russian and Arabic alphabets are written differently to the Latin alphabet

B$)$ ICAO determines that the nationality or common marks and the registration marks will be painted on the aircraft or fixed to it and must be kept clean and visible. It also determines that the letters and numbers must have the same height

C$)$ It is the responsibility of the country of registration of the aircraft to determine the location and dimensions of the registration marks, with prior authorization from ICAO

D$)$ ICAO determines the dimensions of the registration marks and that they must be clean and visible, but not their location on the aircraft