user
Four legs in front, two behind; its steely armor scratched and dented by rocks and sticks; still it toils as it helps feed the hungry
A: plough
B: destroyer escort
C: leer
D: tilt
E: machine
assistant
<|begin_of_thought|>

Deep Thought is thinking for 7.5 million years.

<|end_of_thought|>

<|begin_of_solution|>

A

<|end_of_solution|>