Take context from the input text and decide on the accurate relationship between 'Carlos Lopes' and 'United Nations' from the options provided.
Options: director/manager, employer, owned by, creator

Dr. Dlamini Zuma and Carlos Lopes told the new AfDB President when the three met in New York, USA, on 24 September 2015, in the margins of the 70th Session of the United Nations General Assembly meeting.
employer