How Might an Infant with Secure Attachment Behave in the Strange

How might an infant with secure attachment behave in the Strange Situation?

A) The infant might become very upset when the mother leaves the room and crawl to her for comfort when she returns.
B) The infant might become very upset when the mother leaves the room and avoid her when she returns.
C) The infant would not appear upset when the mother leaves the room.
D) The infant might appear upset when the mother leaves the room, but rely on himself to calm down when she returns.