Which two authentication methods can you use?

You are integrating an Azure Boards project and a GitHub repository.

You need to authenticate Azure Boards to GitHub.

Which two authentication methods can you use? Each correct answer presents a complete solution. NOTE: Each correct selection is worth one point.
A . a trusted root certificate
B . a publisher certificate
C . Azure Active Directory (Azure AD)
D . GitHub user credentials
E . a personal access token (PAT)

Answer: C,D