Which of the following cannot be found in the author's photos? A: Fathers rediscovering their sons. B: Fatherless sons or sonless fathers. C: Fathers separated from their sons because of divorce. D: Fathers unable to love their sons.

Passage 13．What happened that made him extremely sad when he was a teenager? A: A．He went blind. B: B．He lost his mother. C: C．He became fatherless. D: D．The man tried to discourage him.