The Marketing Department Has a Multi-Stream Engagement Program

The marketing department has a multi-stream engagement program. Each stream within the engagement program has multiple leads who have exhausted content. The content marketing manager adds a new piece of content into the top of the first stream only. Who receives the new content at the next cast?

A) All leads in the program with an engagement score higher than 5.
B) All leads who have not exhausted content in the entire program.
C) All leads who have exhausted content in the entire program.
D) All leads who are in the first stream of the program.