user
I have endless make-overs but I never know my look.  I can make any dull room bright.  What am I?
A: back room
B: painted wall
C: bath
D: covering
E: beauty pageant
assistant
<|begin_of_thought|>

Deep Thought is thinking for 7.5 million years.

<|end_of_thought|>

<|begin_of_solution|>

B

<|end_of_solution|>