A Custom Module Needs to Log All Calls of \Magento\Customer\Api\AddressRepositoryInterface::save()

Multiple Choice

A custom module needs to log all calls of \Magento\Customer\Api\AddressRepositoryInterface::save() . Which mechanism do you use?

A) An observer on the customer_address_repository_save event, which is automatically fired for every repository save
B) A proxy configured to intercept all calls to any public method and log them
C) An extension attribute configured in the extension_attributes.xml
D) A plugin declared for the save() method