Read the following conversation and answer the question.

W: Hi, John, haven't seen you for a quite few days. I heard you've been sick. How are you feeling now?

M: They must confuse me with my brother, Jack. Anyway, he is feeling better now.

Question: What do we learn from the conversation? 

- John is not sick.

- John is feeling better.

- Jack hasn't been sick.


John is not sick.