You have an Azure Active Directory (Azure AD) tenant named Contoso.com and an Azure Kubernetes Service (AKS) cluster AKS1. You discover that AKS1 cannot be accessed by using accounts from Contoso.com. You need to ensure AKS1 can be accessed by using accounts from Contoso.com. The solution must minimize administrative effort. What should you do first?
A. From Azure, recreate AKS1.
B. From AKS1, upgrade the version of Kubernetes.
C. From Azure AD, implement Azure AD Premium P2
D. From Azure AD, configure the User settings.