How do the Hagia Sofia and Arc de Triomphe landmarks serve different purposes?
A.
The Hagia Sofia serves as a cemetery; the Arc de Triomphe serves as a bridge between eastern and western Paris.
B.
The Hagia Sofia is the headquarters of the Turkish government; the Arc de Triomphe is a prominent train station.
C.
The Hagia Sofia has religious significance; the Arc de Triomphe honors the heroes of the French Revolution.
D.
The Hagia Sofia was an observatory in ancient times; the Arc de Triomphe bore the tombs of Roman kings.