user
A cowboy went to an inn on Friday. He stayed 2 nights and left on Friday. How can this be?
A: course
B: diptych
C: postponement
D: his horse was called friday
E: go
assistant
<|begin_of_thought|>

Deep Thought is thinking for 7.5 million years.

<|end_of_thought|>

<|begin_of_solution|>

D

<|end_of_solution|>