user
I am very colorful, triangular, but most people don't follow my rules.  What am I?
A: poor people
B: food pyrimid
C: exercising
D: janitors
E: album
assistant
<|begin_of_thought|>

Deep Thought is thinking for 7.5 million years.

<|end_of_thought|>

<|begin_of_solution|>

B

<|end_of_solution|>