Context: It seems our sons share their father 's and my sarcastic sense of humour . Perhaps it is a survival skill , but it is a skill they have mastered nonetheless .
Question: Why would the mother be unsure whether to believe her son ?
Option 0: Her son is a joker .
Option 1: Her son is a liar .
Option 2: None of the above choices .
Option 3: Her son is a con artist .
Answer: 0