Answer:
Step-by-step explanation:
I have a lot of sympathy for your restriction on what the constitution really does and what it is for. If that answer came up in my classroom, I would certainly give it full credit.
However I think you are intended to answer D.
After WWII, the Americans insisted on setting up a government in Japan similar to their own. So that makes B true.
Certainly the constitution is the blueprint for how America is to be governed, and that makes C true.
So in my opinion, it is all of them. D