What would be the recommended scenario for user authentication for internet browser access to the SAP Fiori Launchpad?

Your company is running SAP S/4HANA on premise, with the requirement to run the SAP Fiori Launchpad in the SAP Cloud Platform .

What would be the recommended scenario for user authentication for internet browser access to the SAP Fiori Launchpad?
A . SAML2 and OData Provisioning
B . SAP Logon Tickets
C . Principal Propagation
E . 509 Client Certificates

Answer: D