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 .
What may be a plausible fact about the last room on the first floor ?
Pick the best answer from the following options:
A. It is a large bathroom .
B. I have already opened the door to it .
C. It contains the colors red and yellow just like the rest of the rooms do .
D. None of the above choices .


C