Read the following article and answer the question by choosing from the options.

No one else in the room , I walked towards the door to get out but found it locked . I walked behind the bar but there was no liquor - strange , as Darius always kept the place well - stocked . I grabbed a glass and filled it with cola from the soda gun and sat down at the bar .

What 's a possible reason the writer filled a glass with cola ?
Choose from:
*The door was locked .
*Darius kept the place well stocked .
*No one else was in the room .
*None of the above choices ....A:
None of the above choices .