Inference Listening Lesson - The Beginning

What are they talking about?

Their pets
Their babies
Their husbands
Their bosses

A: How is Billy doing?
B: He's doing well.
A: Does he keep you up at night?
B: He only wakes up once to eat and then falls back asleep.
A: You're lucky. Madeline used to wake up every hour. She would be hungry or need to have her diaper changed. I didn't get much sleep then.