What is the recommended way to add partners and internal users to the customer Expenence site?

Bloomington Caregivers (BC) has created a customer Experience site using Experience Cloud that gives customers the ability to pay this, manage appointments, and open cases with support. BC also has a partner Experience site on Experience Cloud. The company’s leadership has now decided to extend access to the customer Experience site to its partners and internal Salesforce users so they can collaborate more effectively.

What is the recommended way to add partners and internal users to the customer Expenence site?
A . Create business accounts for partners and internal users, enable the accounts as customers, and then create users under these accounts by creating contacts.
B. Configure SSO between the partner site and customer site so partners get access. Also configure SSO between internal org and the customer site so internal users get access to the customer site.
C. Add the existing partner profiles and internal user profiles to the customer Experience site; this will automatically give users access to the customer site.
D. Enable the partner accounts and the internal accounts as customers; the users under these accounts will then automatically gam access to the customer site.

Answer: C