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？（）
- AIncrease the amount of RAM on the client computers.
- BChange from unicast to multicast deployment of images.
- CChange from multicast to unicast deployment of images.
- DDecrease the trivial file transfer protocol （TFTP） block size on the TFTP server.