Read the following context and choose the best option to answer the question.
Context: And what she thinks Kaylee is doing right now . So what 's it like going from a show like Firefly that 's kind of gritty and down on their luck to a show like Atlantis where there 's lots of fancy gadgets ? Everything 's clean . Is n't it like super clean ?
Question: Why are they talking about Firefly and Atlantis ?
Options: 
- They are comparing the grittiness of Firefly to the cleanliness of Atlantis .
 - They are comparing the fancy gadgets on Firefly to those on Atlantis .
 - They are talking about Kaylee who has watched both Firefly and Atlantis .
 - None of the above choices .


They are comparing the grittiness of Firefly to the cleanliness of Atlantis .