How can the Social Accounts and Contacts feature be used to enrich Salesforce data?

How can the Social Accounts and Contacts feature be used to enrich Salesforce data?
A . Users can use their Facebook logins to import education information for all of their Facebook friends.
B . Users can use their Twitter logins to display a contact’s tweets when they are viewing contact records.
C . The administrator can use the company’s Facebook login to allow all users to see all public information on contacts.
D . The administrator can log into LinkedIn to Import publicly displayed education information for contacts.

Answer: D