Which sentence uses the antonym of the following word?
irreproachable
A. My makeup is flawless; there is no scar or blemish
anywhere on my face.
B. The room is immaculate; I cleaned it with extreme
precision, and it is perfect.
C. The structure of the system is simply flawed and
defective; there no way to fix it.

Aman lives on the twelfth floor of an apartment building. every morning he takes the elevator down to the lobby and leaves the building. in the evening, he gets into the elevator, and, if there is someone else in the elevator -- or if it was raining that day -- he goes back to his floor directly. otherwise, he goes to the tenth floor and walks up two flights of stairs to his apartment.