You want to create a new security policy named VendGroupSecPolicy that causes users who are assigned a specific role to view the vendors in vendor group 100 only.

You have created a policy query named VendGroup100Policy and designed it so that the VendTable is the primary table. The users that will be affected by VendGroupSecPolicy must be categorized into an existing security role named VendGroup100XDSRole.

You set the Query property on VendGroupSecPolicy to VendGroup100Policy and the Primary Table property to VendTable.

Which values should you set on the properties on VendGroupSecPolicy?

A. Set the Context String property to VendGroup100XDSRole and the Context Type property to ContextString.
B. Set the Context String property to VendGroup100XDSRole and the Context Type property to RoleName.

C. Set the Role Name property to VendGroup100XDSRole and the Context Type property to RoleName.

D. Set the Role Name property to VendGroup100XDSRole and the Context Type property to ContextString.

References:
https://msdn.microsoft.com/en-us/library/hh300643.aspx