Your company ABC Inc. standardizes on the .NET Framework as its software development platform. Subsequently, virus attacks cause your company to prohibit the execution of any applications downloaded from the Internet. You must ensure that all client computers on your intranet can execute all .NET applications originating from your company. You must also ensure that the execution of .NET applications downloaded from the Internet is prohibited. You must expend the minimum amount of administrative effort to achieve your goal. Which policy should you modify?