选择合适的句子，补全对话。

Jack: Mum?

Mum: Your father is ill. So we can't go to the cinema today.

Jack: Oh, no!

Mum: We can go next time.

Jack: OK.

Mum: Not well. He should go to the hospital now.

A. How does Dad feel now? B. Don't be sad. C. What's wrong? D. He should see a doctor this morning.