Read the following context and choose the best option to answer the question.
Context: I wish I could answer my exam questions like this . Imagine : The question asks for the importance of water and joints in limestone - cave formations . Imagine : The answer I give : Quite important I guess . If you like your caves big . We look unstable . We are on an unstable bridge .
Question: Why is the narrator choosing to be difficult with answering questions ?
Options: 
- They do not know the subject matter .
 - They are trying to be sarcastic .
 - None of the above choices .
 - They are ignorant .


They are trying to be sarcastic .