B is correct because B2C Commerce order management does not support complex or advanced use cases such as split shipments, backorders, partial cancellations, or returns3. Salesforce Order Management provides these capabilities out of the box or with minimal customization.
C is correct because Salesforce Order Management can be installed as a managed package in an existing Service Cloud org, which means that the existing Service Cloud implementation team can leverage their existing skills and knowledge to extend the product to meet the business needs.
E is correct because Salesforce Order Management shares the same database with Service Cloud, which eliminates the need for additional integration between the two systems. Other solutions would require building custom integration to synchronize data between different databases.
A is incorrect because Salesforce Order Management does not replace the Service Cloud Connector, which is used to synchronize data between Service Cloud and B2C Commerce. Salesforce Order Management integrates with both Service Cloud and B2C Commerce using platform events and REST APIs.
D is incorrect because Salesforce Order Management does not support synchronizing orders from one B2C Commerce realm to multiple Salesforce orgs without customization. The standard integration assumes that there is a one-to-one relationship between a B2C Commerce realm and a Salesforce org.
Reference:
1: https://documentation.b2c.commercecloud.salesforce.com/DOC1/topic/com.demandware.dochelp/OrderManagement/OrderManagementOverview.html
2: https://help.salesforce.com/s/articleView?id=sf.om_order_management.htm&type=5
3: https://help.salesforce.com/s/articleView?id=sf.om_installation.htm&type=5
4: https://help.salesforce.com/s/articleView?id=sf.om_data_model.htm&type=5
5: https://help.salesforce.com/s/articleView?id=sf.om_b2c_commerce_integration.htm&type=5
6: https://help.salesforce.com/s/articleView?id=sf.om_b2c_commerce_integration_overview.htm&type=5