With the automatic dependency injection that Magento provides, how is the StoreManagerInterface resolved?

The constructor function for MagentoCatalogModelCategory contains this excerpt:

With the automatic dependency injection that Magento provides, how is the StoreManagerInterface resolved?
A . If no $storeManager is provided, Magento’s code generator creates a shell concrete class based on MagentoStoreModelStoreManagerInterface
B . Magento finds all classes that implement MagentoStoreModelStoreManagerInterface (ordered alphabetically) and injects the first class.
C . Magento looks to the di.xml files in the entire system for a preference node for MagentoStoreModel StoreManagerInterface. This class is constructed and injected
D . Magento throws an exception because you cannot instantiate an interface

View Answer

Answer: A