How would you ensure a delivery is NOT sent to multiple recipients with the same email address?

How would you ensure a delivery is NOT sent to multiple recipients with the same email address?
A . Place a deduplication activity prior to the delivery
B . Place a union activity prior to the delivery
C . Place a change dimension activity prior to the delivery
D . Place a split activity prior to the delivery

View Answer

Answer: A

Explanation:

Reference: https://helpx.adobe.com/campaign/standard/automating/using/deduplication.html