You plan to deploy Windows 8.1 Enterprise to new client computers. You have a Microsoft System Center 2012 R2 Configuration Manager site that is configured to deploy operating system images to computers. Currently, any user can install any image. You need to ensure that images can be downloaded by authorized users only. What should you modify?
A. the security scope of the boot images
B. the properties of the boot images
C. the properties of the distribution points
D. the security scope of the install images