Which two systems are acting as Identity Providers?

Universal Containers (UC) has implemented SSO according to the diagram below. uses SAML while Salesforce Org 1 uses OAuth 2.0. Users usually start their day by first attempting to log into Salesforce Org 2 and then later in the day, they will log into either the Financial System or CPQ system depending upon their job position.

Which two systems are acting as Identity Providers?
A . Financial System
B. Pingfederate
C. Salesforce Org 2
D. Salesforce Org 1

Answer: B,D