Apparently he 's home from the rehabilitation center and grumping around the house with his usual vigor . Did you know that ? I did n't . I stopped on the way home to visit Grandma and he came out from the kitchen . That 's how I found out . Everyone seemed in good spirits .

Question: Why was he grumping around the house with his usual vigor ?
Answer: he was having a psychotic break againhe could n't believe it was mehe recovered fast and well from since his time in the rehabilitation centerNone of the above choices .