When he said it , Sanzo knew that that was right . Somehow , he was remembering something , something important , something vital . Hakkai blinked at him . " What do you mean ? "
According to the above context, choose the best option to answer the following question.
Question: Why is Hakkai so apoplectic with Sanzo ?
Options:
- They are pleased with what Sanzo said .
 - They are surprised by what Sanzo said .
 - They are happy with what Sanzo said .
 - They are familiar with what Sanzo said .


They are surprised by what Sanzo said .