what is the preferred override method to implement the following business rule on the object name?

In a TBO, what is the preferred override method to implement the following business rule on the
object name? Business Rule: Suffix the object name with an incremental number in the format
“_00001”

A.
setObjectName()

B.
setString()

C.
create a new methodautoName() and call setObjectName()

D.
no method needs to be overridden, set in the Application Builder as Default Value