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On observe que le prix des légumes a augmenté alors que celui de la viande a diminué. Un tel phénomène peut s'expliquera.par un déplacement de l'offre de viande vers la droite si l'on sait par ailleurs que légumes et viandes sont des biens substituablesb.par un déplacement de l'offre de légumes vers la gauche si les légumes et la viande sont des biens substituablesc.par un déplacement de l'offre de viande vers la droite si l'on constate par ailleurs que légumes et viande sont des biens complémentairesd.aucune des autres réponses n'est correcte

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