What are the two most efficient ways for the Salesforce Admin to fulfil these requirements?

Universal Containers plans to build a large-scale Community and expose Leads and Opportunities to their resellers.

Universal Containers has the following requirements for their partner account:

• 120,000 partner accounts

• Minimize the number of partner account roles

• Partner account is made up of sales employees and sales managers

• Sales employees only have access to their data

• Sales managers have access to all sales employees data .

What are the two most efficient ways for the Salesforce Admin to fulfil these requirements? Choose 2 answers
A . Set up partner accounts with two roles
B . Set up partner accounts with one role
C . Use sharing rules to grant sales managers access to sales employees’ data
D . Make the sales manager the Super User on the partner account