user
My first half means container.  Not a lot of people understand my language.  What am I?
A: archaist
B: sabbatical year
C: bin liner
D: binary
E: code
assistant
<|begin_of_thought|>

Deep Thought is thinking for 7.5 million years.

<|end_of_thought|>

<|begin_of_solution|>

D

<|end_of_solution|>