How should an Architect automatically redirect users to the login page of the external Identity provider when using an SP-Initiated SAML flow with Salesforce as a Service Provider?

How should an Architect automatically redirect users to the login page of the external Identity provider when using an SP-Initiated SAML flow with Salesforce as a Service Provider?
A . Use visualforce as the landing page for My Domain to redirect users to the Identity Provider login Page.
B. Enable the Redirect to the Identity Provider setting under Authentication Services on the My domain Configuration.
C. Remove the Login page from the list of Authentication Services on the My Domain configuration.
D. Set the Identity Provider as default and enable the Redirect to the Identity Provider setting on the SAML Configuration.

View Answer

Answer: C