A signage of Pao de Acucar supermarket is displayed outside of Flamengo district, Rio De Janeiro, Brazil, June 29, 2011. The proposed merger of french Carrefour SA with Cia. Brasileira de Distribuicao Grupo Pao de Acucar SA would be reviewed by local regulators together with other recent acquisitions by Pao de Acucar, the president of the antitrust agency said. (Austral Foto/Renzo Gostoli)