How should the Salesforce B2B Commerce consultant meet these business requests?

A company recently acquired two separate businesses, both of which have two separate e-stores. The company wants to migrate these eStore to Salesforce B2B Commerce, consolidating into a single platform.

Initially, the company wants these two stores to run independently of one another with their own set of customers (Customers on one storefront should not be able to login into other storefront) and their own look and feel, as well as their own product offering.

How should the Salesforce B2B Commerce consultant meet these business requests?
A . Multiple Storefronts Storefront Associations
B. Single Storefront. Multiple Account Groups
C. Single Storefront, effective Accounts
D. Multiple Salesforce Communities, Multiple Storefronts, Multiple Salesforce Profiles

Answer: B