70-410 installing and configuring windows server 2012 | Your network contains several servers

Following is 70-410 installing and configuring windows server 2012 | Your network contains several servers from latest Microsoft practice test.

Question: 5

Your network contains several servers that run Windows Server 2012 R2 and client computers that run Windows 8.1. You download several signed Windows PowerShell scripts from the Internet. You need to run the PowerShell scripts on all of the servers and all of the client computers. What should you modify first?

A. the environment variables on all of the servers
B. the environment variables on all client computers
C. the execution policy on all of the servers
D. the execution policy on all of the client computers

Answer: D