The answer is not A, because it is not clear enough. Who's we?
The answer is not B, the sentence is not clear about the building they are visiting.
The answer is not C, it's not clear about what building they are talking about.
So your answer is D.
C. It is a word that has implications associated with it. D. It is a word that started in the German language but has had its meaning improved in the English language.
Poland is located in central Europe. Poland is bordered by the Baltic Sea, Germany to the west, Czech Republic and Slovakia to the south, and Ukraine, Belarus, and Lithuania to the east.
I think it is C
Hope this helps correct me if I'm wrong