You have an on-premises app named App1 that accesses Azure resources by using credentials stored in a configuration file. You plan to upgrade App1 to use an Azu...

You have an on-premises app named App1 that accesses Azure resources by using credentials stored in a configuration file.
You plan to upgrade App1 to use an Azure service principal.
What is required for App1 to programmatically sign in to Azure Active Directory (Azure AD)?

A. the application ID, a client secret, and the object ID B. a client secret, the object ID, and the tenant ID C. the application ID, a client secret, and the tenant ID D. the application ID, a client secret, and the subscription ID