The checkbox "Use default value" is checked and the corresponding input field is disabled, as shown in the graphic above. How does Magento represent this state in the corresponding EAV value tables?

A. no row with a value for this store view and a row with value NULL for default

B. no row with a value for this store view and a row with any value for default

C. a row with value NULL for this store view and a row with value NULL for default

D. a row with value NULL for this store view and a row with any value for default

E. no row with a value for this store view and no row with a value for default

Which one of the following accurately describes the purpose of the resource helper classes instantiated through Mage::getResourceHelper?

A. Format values returned by the database for display in templates.

B. Provide a convenient way to modify database table properties.

C. Provide public access to concrete implementations of varien_Db_Adapter_Interface.

D. Provide clean access to another module's database tables.

E. Wrap vendor-specific SQL additions into an RDBMS-agnostic interface.

Which of the following will NOT generate a