A user named User1 is the owner of the background workflow that makes changes to an account after the Credit Limit field of the account is modified.
A user named User2 adds a new account and saves the record.
A user named User3 edits the record and changes the street address of the account.
A user named User4 edits the record and adds a parent account.
User2 changes the value in the Credit Limit field and assigns the account to User4.
You need to identify which name will be displayed in the Last Modified By Field on the account record.
Which name should you identify?