You need to ensure an alphanumeric password is required on all Windows 8 tablets

You administer Windows 8 Pro and Windows RT tablets for your company. Your company
network includes a Windows Server 2012 domain and Microsoft Exchange 2010 with
ActiveSync and Outlook Web Access.
Users will be using the tablets outside of the corporate network.
The Microsoft Exchange ActiveSync policy is configured to require an alphanumeric
password.
You need to ensure an alphanumeric password is required on all Windows 8 tablets.
What should you do?

A.
From the Mail app, add the user’s Exchange account.

B.
Set up New Partnership in Sync Center.

C.
From Sync your Settings, set Password to Off.

D.
Create a user profile by using a Microsoft account.