Which user ID must be locked for security reasons after you create an administrator business user? Please choose the correct answer.

Which user ID must be locked for security reasons after you create an administrator business user? Please choose the correct answer.
A . SAP Lifecycle Management Administrator (SAP_LMADM)
B. SAP Customer Business User (SAP_CUST_BUS)
C. SAP Customer Initial User (SAP_CUST_INI)
D. SAP E-Mail Inbound Processing (SAP_SMTP_IN)

Answer: C