Exam BCABA topic 1 question 49 discussion

Narrative recording indicates the following:
Sequence #1:
As Dad goes to change Rita's diaper, Mike screams. Dad puts Rita down, moves towards Mike, and tells him "be quiet."
Sequence #2:
Mom is sitting next to Mike when the phone rings. She gets up, answers the phone, and starts talking to a friend. Mike starts screaming. Mom tells the friend good- bye and hangs up the phone. She then goes to Mike and tells him to stop screaming.
Which is the MOST plausible hypothesis? Mom and Dad's behavior is most likely