Out of the choices provided above, it can be concluded that compared to data warehouses, data marts cost less, as one of their defining characteristics. Therefore, the option A holds true.
Data warehouses can be referred to or considered as the non-physically or completely virtual spaces on the cyber world, which helps in the regeneration of usage of data in the desired manner.
Storage of data on these warehouses is a costly affair, and thus, most organizations have started preferring data marts due to their economic costs and savings for the organization.
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