A company that exports handicrafts needs to send from Medellin to Italy 1100 units, 1300 to Spain and 1000 to France. the logistics director determined the cheapest shipping routes per unit. for this it has three ports of transhipment Buenaventura, Cartagena and Santa Marta. What are the variables of the model?
a) MB - MC - MS - BI - BE - BF - CI - CE - CF - SI - SE - SF.
b) MB - MC - MS - BI - BE - BF - CE - CF - SI - SE - SF.
c) MB - MC - MS - IB - BE - BF - CI - CE - CF - SI - SE - SF.
d) MB - MC - MS - BI - BE - BF - CI - CE - CF - SI - SE - FS.