Read the following context and choose the best option to answer the question.
Context: There was a red couch , yellow chair , red table , half yellow and half red carpet . All red and yellow . I then went along and started opening doors . One door led to another red and yellow cozy looking bedroom , another had led to a red / yellow bathroom , but the last room on the first floor ( there were two ) was locked .
Question: What may be a plausible fact about the last room on the first floor ?
Options: 
A. It is a large bathroom .
B. None of the above choices .
C. I have already opened the door to it .
D. It is locked from the inside .


D