Choose one sentence that has the same meaning as the root one:
We should visit the Duty Free Shop. Our flight will be called.
A. Before we should visit the Duty Free Shop, our flight will be called.
B. We should visit the Duty Free Shop before our flight will be called.
C. Before we should visit the Duty Free Shop, our flight is called.
D. We should visit the Duty Free Shop before our flight is called.