Which two actions should you perform?

You plan to use Password Sync on your DirSync Server with Azure Active Directory {Azure
AD) on your company network. You configure the DirSync server and complete an initial
synchronization of the users.

Several remote users are unable to log in to Office 365. You discover multiple event log
entries for “Event ID 611 Password synchronization failed for domain.”
You need to resolve the password synchronization issue.
Which two actions should you perform? Each correct answer presents part of the solution.

A.
Restart Azure AD Sync Service.

B.
Run the Set-FullPasswordSync Power Shell cmdlet.

C.
Force a manual synchronization on the DirSync server.

D.
Add the DirSync service account to the Schema Admins domain group.

Explanation:
http://support2.microsoft.com/kb/2915221