Which of the following statements are true about the ITU-Radiocommunication Sector (ITU-R)? Each correct answer represents a complete solution. Choose all that apply.

A.
It manages seven regions.

B.
It is responsible for global management of RF spectrum, in addition to satellite orbits.

C.
It is required to allocate spectrum and register frequency allocation, orbital positions, and other parameters of satellites, in order to avoid harmful interference between radio stations of different countries.

D.
It is one of the three sectors of the International Telecommunication Union (ITU) andis responsible for radio communication.

E.
Its membership includes 100Member States and more than 700 Sector Members and Associates.