Explanation:
According to the Commerce App page, commerce app is an app that allows you to manage your B2B Commerce data and functionality in Salesforce. Commerce app has several workspaces that correspond to different aspects of your B2B Commerce site, such as product, pricing, promotion, order, store, search, report, and content. Two of the objects that are accessible from the Commerce app menu are product and buyer groups. Product object stores information about the products that you sell on your site, such as name, description, status, visibility, category, image, etc. Buyer groups object stores information about the buyer groups that you assign to your site, such as name, description, price list selection method, price lists, etc. Therefore, options B and C are correct. Options A, D, and E are false because buyer policies, buyer entitlements, and reports are not objects that are accessible from the Commerce app menu. They are features or components that can be managed separately in the CC Admin interface or in Salesforce Setup.