Your company has 1，000 client computers. Each client computer has 1 GB of RAM. You are planning to deploy Windows 7 Enterprise.   You need to design a zero-touch deployment strategy to increase the number of client computers that can be imaged at one time.   What should you do？（）

• A、Increase the amount of RAM on the client computers.
• B、Change from unicast to multicast deployment of images.
• C、Change from multicast to unicast deployment of images.
• D、Decrease the trivial file transfer protocol （TFTP） block size on the TFTP server.