whiCh oF thE Following is truE As to thE EssEntiAl FunCtions oF thE u.n.
A．it's only ConCErnED with humAn rights.
B．it only solvEs EConomiC AnD CulturAl proBlEms.
C．it Co-orDinAtEs ACtions oF' nAtions whErE nECEssAry.
D．it only Aims to DEvElop FriEnDly rElAtions.