How do you enable this capability?

You want to configure an approval workflow to require an approval for updates to a defined function .

How do you enable this capability?
A . Flag the function for approval
B . Set the 1064 Function Maintenance parameter to YES
C . Configure the GRAC_FUNCTION_APPROVER agent
D . Activate the SAP_GRAC_FUNC_APPR MSMP Process ID

Answer: B