You publish an application named MyApp to Azure Active Directory (Azure AD). You grant access to the web
APIs through OAuth 2.0.
MyApp is generating numerous user consent prompts.
You need to reduce the amount of user consent prompts.
What should you do?

A.
Enable Multi-resource refresh tokens.

B.
Enable WS-federation access tokens.

C.
Configure the Open Web Interface for .NET.

D.
Configure SAML 2.0.

Explanation:
When using the Authorization Code Grant Flow, you can configure the client to call multiple resources.
Typically, this would require a call to the authorization endpoint for each target service. To avoid multiple calls
and multiple user consent prompts, and reduce the number of refresh tokens the client needs to cache, Azure
Active Directory (Azure AD) has implemented multi-resource refresh tokens. This feature allows you to use a
single refresh token to request access tokens for multiple resources.
https://msdn.microsoft.com/en-us/library/azure/dn645538.aspx