Universal Containers needs to create a Community that meets the following requirements:
✑ Self-Service Support Community, in which customer and partner users are community members.
✑ Partner users help Universal Containers by adding or resolving cases for their customers within the Community.
✑ Partner users need access to some standard objects except Leads, Campaigns, and Opportunity objects.
✑ Partners use Chatter and the Case Feed to communicate with the Universal Containers team and customers.
Which license type should a Salesforce Administrator use for these Partner users?