What action should be taken if a third party is sending a message for the customer outside of the Marketing Cloud?

Subscribers are collected on a customer’s website whose subscription database of record is Salesforce Marketing Cloud. The customer sends up to 5 emails per week based on subscriber activity.

The list is:

– Compiled in a database in the website Content Management System (CMS).

– Imported into Marketing Cloud nightly at 11 p.m.

What action should be taken if a third party is sending a message for the customer outside of the Marketing Cloud?
A . Unsubscribes should be synchronized between senders.
B . They will need to integrate with the Marketing Cloud SOAP AP
D . Engagement metrics will be passed into Marketing Cloud.
E . The third-party send list should be pulled from the CM

Answer: B

Explanation:

The right answer is: They will need to integrate with the Marketing Cloud SOAP API. Because this is what required to meet requirement "Unsubscribes should be synchronized between senders" as well as "Engagement metrics will be passed into Marketing Cloud. "