user
Forwards I'm heavy, but backwards I'm not.   What am I?
A: lead
B:    im a ton ha
C: rout
D: forwards I'm fat
E: pull
assistant
<|begin_of_thought|>

Deep Thought is thinking for 7.5 million years.

<|end_of_thought|>

<|begin_of_solution|>

B

<|end_of_solution|>