You have a Microsoft SQL Server 2013 server named Server1. You install SharePoint
server 2013 on a server named Server2. Server1 and Server2 are joined to the same Active
Directory domain. You create a domain user account named Admin1. On Server2, you add
Admin1 to the local Administrators group. You need to ensure that Admin1 can create a
server farm with least amount of permissions granted. What should you do?

A.
On a domain controller, add Admin1 to the Domain Admins group.

B.
On Server1, add Admin1 to the local Administrators group.

C.
On Server1, assign the dbcreator and the securityadmin server roles to Admin1.

D.
On Server1, assign the diskadmin and the setupadmin server roles to Admin1.

Explanation:
Setup user account
The Setup user account is used to run the following:
Setup
SharePoint Products Configuration Wizard
Domain user account.
Member of the Administrators group on each server on which Setup is run.
SQL Server login on the computer that runs SQL Server.
Member of the following SQL Server security roles:
securityadminfixed server role
dbcreatorfixed server role
If you run Windows PowerShell cmdlets that affect adatabase, this account must be a member of the
db_ownerfixed database role for the database.
http://technet.microsoft.com/en-us/library/ee662513.aspx