Your company has a datacenter in Los Angeles.
The datacenter contains a server named VMM1 that has System Center 2012 Virtual Machine Manager (VMM) installed.
You plan to deploy a service named SRV1.
SRV1 will contain three tiers.
Each tier will contain 8 instances.
You need to configure the service template to ensure that when an application in SRV1 is upgraded, SRV1 remains available.
What should you configure for each tier?

A.
the preferred deployment order

B.
the maximum instance count

C.
the minimum instance count

D.
the number of upgrade domains

E.
the preferred servicing order

Explanation:
http://technet.microsoft.com/en-us/library/gg675089.aspx
To minimize service interruptions when a tier is updated in-place, you can specify more than one upgrade domain in the tier properties.
When the tier is updated, VMM updates the virtual machines in the tier according to the upgrade domain to which they belong.
VMM upgrades one upgrade domain at a time, shutting down the virtual machines running within the upgrade domain, updating them, bringing them back online,
and then moving on to the next upgrade domain.
By shutting down only the virtual machines running within the current upgrade domain, VMM ensures that an upgrade takes place with the least possible impact tothe running service.