Right now , I ' m doing her a complete favor by being cordial to her . If she were n't my roommate , I would never in a million years talk to her . Seriously , I ' m not even being sarcastic right now .

Based on the preceding passage, choose your answer for question Why is the narrator talking to her roommate ?
Select from the following.
[I] Because they share a space .
[II] Because they are friends .
[III] None of the above choices .
[IV] Because they like being sarcastic to one another .
The answer is:
[I]