Question 139: Select the correct statements about upgrading to SP2010:
a. SharePoint 2003 can be directly upgraded to SP2010
b. SharePoint 2007 SP1 can be upgraded to SP2010
c. At least SP2007 SP2 is required for DB upgrade or In-Place Upgrade methods to SP2010
d. The backups from SP2007 SP1 can be upgraded to SP2010 using the DB Upgrade method.